EP0086689B1 - Energising circuit for a control contact and its application to the control of an off-delay timer of a relay - Google Patents

Energising circuit for a control contact and its application to the control of an off-delay timer of a relay Download PDF

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Publication number
EP0086689B1
EP0086689B1 EP83400210A EP83400210A EP0086689B1 EP 0086689 B1 EP0086689 B1 EP 0086689B1 EP 83400210 A EP83400210 A EP 83400210A EP 83400210 A EP83400210 A EP 83400210A EP 0086689 B1 EP0086689 B1 EP 0086689B1
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EP
European Patent Office
Prior art keywords
circuit
diode
resistor
contact
supply
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83400210A
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German (de)
French (fr)
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EP0086689A1 (en
Inventor
Philippe Barthelemy
Gilles Baurand
François Roussel
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Telemecanique SA
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La Telemecanique Electrique SA
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Priority to AT83400210T priority Critical patent/ATE14809T1/en
Publication of EP0086689A1 publication Critical patent/EP0086689A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/60—Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces
    • H01H1/605—Cleaning of contact-making surfaces by relatively high voltage pulses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/18—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for introducing delay in the operation of the relay

Definitions

  • the present invention relates to a power supply circuit for a control contact and its application to the control of a rest time delay of a relay.
  • control contact K When you want to use a contact K to control a function on a device supplied with AC or DC power, including electronic or non-electronic components requiring a power supply and at least one control and having to work in a wide voltage range (24 V to 240 V for example), in order to have good contact reliability, the control contact K must be traversed by a current of minimum intensity I K of the order of approximately 10 mA for a standard contact.
  • the object of the present invention is to provide a circuit making it possible to supply a control contact K with sufficient current while maintaining a low current of current in the control circuit regardless of the value of the voltage connected to the terminals of the circuit. .
  • Another object of the invention is its application to a rest time delay of a relay.
  • the supply circuit of a contact K controlling a function with at least one delay or a storage in a use circuit U supplied by an alternating voltage on its input terminals E, 44, and of which the output D is controlled by the output of an integrated circuit L also connected to the other terminal 45 of the output of the use circuit, said circuit being controlled by at least one control circuit 24 supplying a constant voltage and being supplied by a supply circuit 23 supplying a practically constant current to the integrated circuit, is characterized in that the control circuit is connected to the network voltage by means of a series circuit formed by a first resistor, a first diode and a contact, while the current supply circuit is connected to the mains voltage either by a second diode mounted in reverse and the contact, or by a first Zener diode, a third diode and a second res istance.
  • FIG. 1 represents a use circuit U connected by its two terminals E, 44 to a voltage source which can vary over a wide range. For example, this range can extend from 24 V to 240 V.
  • the input terminal E is also connected by a switch K to a diode 31 connected by its cathode to a resistor 32 of high ohmic value and a circuit 24 supplying at C a practically continuous and stabilized control voltage Uc.
  • Circuit 24 is connected to terminal 45 of the use circuit.
  • a series circuit constituted by a diode 29 whose cathode is connected to the cathode of a Zener diode 30 which is connected by its anode to the cathode of a diode 26 whose anode is connected to the anode of diode 31.
  • the integrated circuit can be of different kinds, as well as the use circuit.
  • the integrated circuit will consist of an oscillator and a pulse counter serving as a time delay and the use circuit may be a relay, the supply of which is controlled by a static switch triggered by the time delay: this example d 'application is not limiting.
  • the circuit described above makes it possible, from an alternating or direct voltage source varying over a wide range, to control a circuit by a switch K which will always be traversed by a current sufficient to ensure good reliability in contact, while limiting the energy dissipated in the control and supply circuit 24.
  • the circuit of FIG. 1 further comprises a signaling circuit 25 comprising a light-emitting diode 252, connected at 45, a resistor 251, connected to point A, a diode 253 connected to the output 11 of the integrated circuit L and a diode 254 connected at output 2 of circuit L, which is itself connected by an internal inverter to circuit L at point C.
  • a signaling circuit 25 comprising a light-emitting diode 252, connected at 45, a resistor 251, connected to point A, a diode 253 connected to the output 11 of the integrated circuit L and a diode 254 connected at output 2 of circuit L, which is itself connected by an internal inverter to circuit L at point C.
  • the diode 252 only lights up when the contact K is open and the output 11 is at the high level.
  • FIG. 2 represents a rest timer comprising 4 input terminals 41 to 44, among which the terminals 43 and 44 are connected in series by the coil of the relay to be controlled, with a source of alternating or direct voltage.
  • Terminal 42 will be connected directly to one of terminals P of the AC voltage source, while terminal 41 is connected to terminal P of the source by a contact K for timing control.
  • a diode bridge 47, 48, 49, 50 constituting a rectifier intended to make the current unidirectional in the thyristor 51.
  • a thyristor 51 is connected by its anode to the terminal 46 of the diode bridge output and by its cathode to the terminal 45 of the diode bridge output.
  • a series circuit, resistor 52, capacitor 53, is connected in parallel to the thyristor to protect it against high dV / dt at power up.
  • a clipper 54 is also connected in parallel to the thyristor to protect it against excessively high overvoltages, the clipping voltage being of the order of 600 volts.
  • the thyristor trigger is connected, via a resistor 55 in parallel with a capacitor 56, to the cathode of the thyristor connected to terminal 45.
  • this trigger is also connected by a resistor 17 to the output 11 of a circuit 18 CMOS "EFCIS of the type EFB8305, based on the counting of pulses supplied by an adjustable oscillator.
  • the potentiometer allows you to make an initial adjustment of the oscillator frequency.
  • the wiring of the CMOS circuit carried out once and for all during manufacture makes it possible to choose the number of pulses counted, at the end of which counter no longer supplies the trigger of the thyristor.
  • the counting control signal is given.
  • the thyristor 51 after an adjustable time, stops driving, no longer supplying the load to be controlled.
  • the CMOS circuit includes an automatic internal reset of the counting flip-flops each time the supply voltage disappears.
  • Circuit 18 must be connected by its terminals 8, 9, 12 to terminal 45. To operate, circuit 18 must be supplied by a supply circuit whose output A is connected to terminals 16, 13, 10 of circuit 18 , and controlled by a control circuit 24 whose output C is connected to terminals 1, 14, 15 of circuit 18.
  • a resistor 27 for limiting the current in the event of an overvoltage is connected to the terminal 42 on the one hand and, on the other hand, to the terminal 45 of the bridge by a clipper 28 protecting the supply circuit.
  • the point common to the resistor 27 and to the clipper 28 is connected to the anode of a diode 29 carrying out a single alternation rectification whose cathode is connected to a Zener diode 30 mounted in reverse and whose anode is connected, on the one hand, to the cathode of a diode 26 and, on the other hand, to the current supply circuit 23 constituted by the collector of an NPN transistor 234 whose emitter is connected to the collector of a second NPN transistor 233, by a diode 235 for protection against parasites and overvoltages, connected directly.
  • the emitter of the second transistor 233 is connected to terminal 45 by a resistor 237 in series with a diode 238 connected directly, avoiding reverse polarization of the base-emitter junction of transistor 233 when the network is cut off, and a capacitor 239 serving to maintain a stabilized level of supply.
  • the collector of the first transistor 234 is connected by a resistor 230 to its base which is itself connected to the base of the second transistor 233 by a resistor 231.
  • the base of the second transistor 233 is connected to terminal 45 by a Zener stabilization diode 236, mounted in reverse.
  • the common point A to the diode 238 and to the capacitor 239 is connected to the power supply inputs of the CMOS circuit.
  • the anode of the diode 26 is connected, on the one hand, to the terminal 41 and, on the other hand, to the anode of a diode 31, performing a single alternation rectification.
  • the cathode of this rectifier diode is connected by a resistor 32 at point C which is connected to the control input of the CMOS circuit on the one hand, and, on the other hand, to terminal 45 by a circuit 24 providing a voltage stabilized and smoothed control Vc, consisting of a capacitor 243, a Zener diode 244, a resistor 245, connected in parallel.
  • a signaling circuit 25 is connected by a resistor 251 to the supply point A, by the cathode of a light-emitting diode 252 at terminal 45, by two diodes 253 and 254, the cathodes of which are respectively connected to the outputs 11 and 2 of the CMOS circuit and each having the anode connected to the common point of the resistor 251 and the diode 252.
  • circuit 18 is connected via an internal inverter circuit to circuit 18 to terminal 1, on which the control signal arrives.
  • the diodes 29, 30, 26 are mounted so that the diode 29 is under direct voltage and the diode 26 under reverse voltage when the contact K is open, which allows the current passing through the terminal 42 to supply the supply circuit 23, while the control circuit is not supplied.
  • the current which comes from contact K is used to supply on the one hand, the control circuit 24 and, on the other hand, the supply circuit 23 by the diode 26.
  • the thyristor conducts and supplies power to the relay, as long as the contact K remains closed.
  • the CMOS circuit supplied by the supply circuit 23, will count the pulses. After an adjustable time, corresponding to a number. determined by pulses to be counted, the circuit no longer supplies the thyristor trigger and the coil B of the relay, consequently, is no longer supplied.

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  • Relay Circuits (AREA)
  • Electronic Switches (AREA)
  • Keying Circuit Devices (AREA)
  • Electric Vacuum Cleaner (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Air Bags (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

With this circuit, a current may be caused to flow through a contact (K) controlling the voltage supply of an electronic control circuit (24), of sufficient intensity for the reliability of the contact to be good, without the current flowing in the control circuit (24) being too high and this independently of the supply voltage (terminals E, 44) applied to the supply terminals of the user circuit (U). For this, the control circuit (24) is fed with power when the contact (K) is closed, through said contact (K), a first diode (31) and a resistor (32) connected in series, whereas a piloting circuit (11), which is an integrated time delay or memory circuit associated with said user circuit (U), is then supplied through said contact (K) and a second diode (26). When contact (K) is open, said piloting circuit (11) is fed through a third diode (29) and a Zener diode (30), the second diode (26) then preventing the control circuit (24) from being supplied with power.

Description

La présente invention concerne un circuit d'alimentation d'un contact de commande et son application à la commande d'une temporisation de repos d'un relais.The present invention relates to a power supply circuit for a control contact and its application to the control of a rest time delay of a relay.

Lorsque l'on veut utiliser un contact K pour commander une fonction sur un appareil alimenté en alternatif ou en continu, comprenant des composants électroniques ou non nécessitant une alimentation et au moins une commande et devant travailler dans une large gamme de tension (24 V à 240 V par exemple), il est nécessaire, pour avoir une bonne fiabilité de contact, que le contact de commande K soit parcouru par un courant d'intensité minimum IK de l'ordre de 10 mA environ pour un contact standard.When you want to use a contact K to control a function on a device supplied with AC or DC power, including electronic or non-electronic components requiring a power supply and at least one control and having to work in a wide voltage range (24 V to 240 V for example), in order to have good contact reliability, the control contact K must be traversed by a current of minimum intensity I K of the order of approximately 10 mA for a standard contact.

D'autre part, pour commander un circuit électronique, il n'est pas nécessaire d'avoir des courants d'intensité élevée. Une valeur de l'ordre du milliampère peut suffire, car les circuits sont commandés en tension. De plus, il est connu, si l'on veut travailler dans une large gamme de tension, d'inclure une série de résistances chutri- ces qui seront branchées par des cavaliers, de façon à maintenir le courant dans le contact à une valeur acceptable sans toutefois dissiper trop d'énergie dans le circuit de commande.On the other hand, to control an electronic circuit, it is not necessary to have high intensity currents. A value on the order of a milliampere may suffice, since the circuits are voltage-controlled. In addition, it is known, if one wishes to work in a wide voltage range, to include a series of chistor resistors which will be connected by jumpers, so as to maintain the current in the contact at an acceptable value without, however, dissipating too much energy in the control circuit.

Le but de la présente invention est de réaliser un circuit permettant d'alimenter un contact de commande K avec une intensité suffisante tout en conservant un courant d'intensité faible dans le circuit de commande indépendamment de la valeur de la tension branchée aux bornes du circuit.The object of the present invention is to provide a circuit making it possible to supply a control contact K with sufficient current while maintaining a low current of current in the control circuit regardless of the value of the voltage connected to the terminals of the circuit. .

Un autre but de l'invention est son application à une temporisation repos d'un relais.Another object of the invention is its application to a rest time delay of a relay.

Selon l'invention, le circuit d'alimentation d'un contact K commandant une fonction avec au moins un retardement ou une mémorisation dans un circuit d'utilisation U alimenté par une tension alternative sur ses bornes d'entrées E, 44, et dont la sortie D est pilotée par la sortie d'un circuit intégré L relié également à l'autre borne 45 de sortie du circuit d'utilisation, ledit circuit étant commandé par au moins un circuit de commande 24 fournissant une tension constante et étant alimenté par un circuit d'alimentation 23 fournissant un courant pratiquement constant au circuit intégré, est caractérisé en ce que le circuit de commande est branché à la tension du réseau par l'intermédiaire d'un circuit série formé par une première résistance, une première diode et un contact, tandis que le circuit d'alimentation en courant est relié à la tension du réseau soit par une deuxième diode montée en inverse et le contact, soit par une première diode Zener, une troisième diode et une deuxième résistance.According to the invention, the supply circuit of a contact K controlling a function with at least one delay or a storage in a use circuit U supplied by an alternating voltage on its input terminals E, 44, and of which the output D is controlled by the output of an integrated circuit L also connected to the other terminal 45 of the output of the use circuit, said circuit being controlled by at least one control circuit 24 supplying a constant voltage and being supplied by a supply circuit 23 supplying a practically constant current to the integrated circuit, is characterized in that the control circuit is connected to the network voltage by means of a series circuit formed by a first resistor, a first diode and a contact, while the current supply circuit is connected to the mains voltage either by a second diode mounted in reverse and the contact, or by a first Zener diode, a third diode and a second res istance.

D'autres caractéristiques et avantages de l'invention apparaîtront plus clairement à la lumière de la description faite en référence aux dessins annexés, dans lesquels :

  • la figure 1 représente le schéma de principe de l'invention ;
  • la figure 2 le schéma électronique de l'application de l'invention à un appareil de temporisation de la mise hors service de la bobine d'un relais.
Other characteristics and advantages of the invention will appear more clearly in the light of the description given with reference to the appended drawings, in which:
  • Figure 1 shows the block diagram of the invention;
  • FIG. 2 the electronic diagram of the application of the invention to a device for delaying the deactivation of the coil of a relay.

La figure 1 représente un circuit d'utilisation U branché par ses deux bornes E, 44 à une source de tension qui peut varier dans une large plage. A titre d'exemple, cette plage peut s'étendre de 24 V à 240 V. La borne d'entrée E est également reliée par un interrupteur K à une diode 31 reliée par sa cathode à une résistance 32 de grande valeur ohmique et un circuit 24 fournissant en C une tension de commande Uc pratiquement continue et stabilisée.FIG. 1 represents a use circuit U connected by its two terminals E, 44 to a voltage source which can vary over a wide range. For example, this range can extend from 24 V to 240 V. The input terminal E is also connected by a switch K to a diode 31 connected by its cathode to a resistor 32 of high ohmic value and a circuit 24 supplying at C a practically continuous and stabilized control voltage Uc.

Le circuit 24 est relié à la borne 45 du circuit d'utilisation.Circuit 24 is connected to terminal 45 of the use circuit.

En parallèle sur l'interrupteur K est monté un circuit série constitué par une diode 29 dont la cathode est reliée à la cathode d'une diode Zener 30 qui est reliée par son anode à la cathode d'une diode 26 dont l'anode est branchée à l'anode de la diode 31.In parallel on the switch K is mounted a series circuit constituted by a diode 29 whose cathode is connected to the cathode of a Zener diode 30 which is connected by its anode to the cathode of a diode 26 whose anode is connected to the anode of diode 31.

Un circuit 23 d'alimentation en courant, branché, d'une part, au point commun à la diode Zener 30 et à la diode 26 et, d'autre part, à la borne 45, fournit à sa sortie un courant pratiquement constant qui suffit à alimenter un circuit intégré L, dont la sortie 11 est branchée à la borne D du circuit d'utilisation et au moins une entrée de commande est branchée en C..A current supply circuit 23, connected, on the one hand, to the point common to the Zener diode 30 and to the diode 26 and, on the other hand, to terminal 45, supplies at its output a practically constant current which suffices to supply an integrated circuit L, the output 11 of which is connected to terminal D of the operating circuit and at least one control input is connected to C ..

Le circuit intégré peut être de différente sorte, ainsi que le circuit d'utilisation. Dans une application particulière, le circuit intégré sera constitué par un oscillateur et un compteur d'impulsions servant de temporisation et le circuit d'utilisation peut être un relais dont l'alimentation est commandée par un interrupteur statique déclenché par la temporisation : cet exemple d'application n'étant pas limitatif.The integrated circuit can be of different kinds, as well as the use circuit. In a particular application, the integrated circuit will consist of an oscillator and a pulse counter serving as a time delay and the use circuit may be a relay, the supply of which is controlled by a static switch triggered by the time delay: this example d 'application is not limiting.

Le circuit décrit précédemment permet, à partir d'une source de tension alternative ou continue variant dans une large plage, de commander un circuit par un interrupteur K qui sera toujours parcouru par un courant suffisant pour assurer une bonne fiabilité au contact, tout en limitant l'énergie dissipée dans le circuit de commande 24 et d'alimentation.The circuit described above makes it possible, from an alternating or direct voltage source varying over a wide range, to control a circuit by a switch K which will always be traversed by a current sufficient to ensure good reliability in contact, while limiting the energy dissipated in the control and supply circuit 24.

Lorsque le contact K est ouvert, le courant d'alimentation, la nécessaire au circuit 23, circule à travers les diodes 29 et 30. La diode 26 s'oppose au passage du courant d'alimentation dans le circuit de commande 24.When the contact K is open, the supply current, necessary for the circuit 23, flows through the diodes 29 and 30. The diode 26 is opposed to the passage of the supply current in the control circuit 24.

Par contre, lorsque l'interrupteur de commande K est fermé, le courant d'alimentation, par suite de la tension de la Zener 30, ne circule pas dans la branche 29, 30, mais passe par l'interrupteur de commande K et la diode 26. Donc, l'interrupteur K est parcouru par le courant nécessaire à l'alimentation du circuit 23 et le courant Ic nécessaire au circuit de commande (qui est négligeable par rapport au courant d'alimentation).On the other hand, when the control switch K is closed, the supply current, due to the voltage of the Zener 30, does not flow in the branch 29, 30, but passes through the control switch K and the diode 26. Therefore, the switch K is traversed by the current necessary for the supply of the circuit 23 and the current Ic necessary for the control circuit (which is negligible compared to the supply current).

On améliore ainsi la fiabilité du contact K, alors qu'en ne faisant circuler dans K que le courant Ic, nous n'aurions pas une fiabilité de contact suffisante.This improves the reliability of the contact K, while by only circulating in K the current Ic, we would not have sufficient contact reliability.

D'autre part, en prenant pour la résistance 32 une valeur élevée, on est certain d'avoir un courant Ic faible, même lorsque la tension d'alimentation augmente, et par conséquent de dissiper peu d'énergie.On the other hand, by taking a high value for the resistor 32, it is certain to have a low current Ic, even when the supply voltage increases, and consequently to dissipate little energy.

Le circuit de la figure 1 comprend en plus un circuit de signalisation 25 comprenant une diode électroluminescente 252, branchée en 45, une résistance 251, reliée au point A, une diode 253 reliée à la sortie 11 du circuit intégré L et une diode 254 reliée à la sortie 2 du circuit L, qui est elle-même branchée par un inverseur interne au circuit L au point C.The circuit of FIG. 1 further comprises a signaling circuit 25 comprising a light-emitting diode 252, connected at 45, a resistor 251, connected to point A, a diode 253 connected to the output 11 of the integrated circuit L and a diode 254 connected at output 2 of circuit L, which is itself connected by an internal inverter to circuit L at point C.

Ainsi, la diode 252 ne s'éclaire que lorsque le contact K est ouvert et la sortie 11 est au niveau haut.Thus, the diode 252 only lights up when the contact K is open and the output 11 is at the high level.

La figure 2 représente une temporisation repos comportant 4 bornes d'entrée 41 à 44, parmi lesquelles les bornes 43 et 44 sont reliées en série par la bobine du relais à commander, avec une source de tension alternative ou continue. La borne 42 sera branchée directement à une des bornes P de la source de tension alternative, tandis que la borne 41 est reliée à la borne P de la source par un contact K de commande de la temporisation.FIG. 2 represents a rest timer comprising 4 input terminals 41 to 44, among which the terminals 43 and 44 are connected in series by the coil of the relay to be controlled, with a source of alternating or direct voltage. Terminal 42 will be connected directly to one of terminals P of the AC voltage source, while terminal 41 is connected to terminal P of the source by a contact K for timing control.

Aux bornes 43 et 44 est branché un pont de diodes 47, 48, 49, 50, constituant un redresseur destiné à rendre le courant unidirectionnel dans le thyristor 51.At terminals 43 and 44 is connected a diode bridge 47, 48, 49, 50, constituting a rectifier intended to make the current unidirectional in the thyristor 51.

Un thyristor 51 est branché par son anode à la borne 46 de sortie du pont de diodes et par sa cathode à la borne 45 de sortie du pont de diodes. Un circuit série, résistance 52, condensateur 53, est branché en parallèle sur le thyristor pour protéger celui-ci contre les dV/dt élevées à la mise sous tension.A thyristor 51 is connected by its anode to the terminal 46 of the diode bridge output and by its cathode to the terminal 45 of the diode bridge output. A series circuit, resistor 52, capacitor 53, is connected in parallel to the thyristor to protect it against high dV / dt at power up.

Un écréteur 54 est également branché en parallèle sur le thyristor pour le protéger contre des surtensions trop élevées, la tension d'écrétage étant de l'ordre de 600 Volts. La gâchette du thyristor est branchée, par l'intermédiaire d'une résistance 55 en parallèle avec un condensateur 56, à la cathode du thyristor relié à la borne 45.A clipper 54 is also connected in parallel to the thyristor to protect it against excessively high overvoltages, the clipping voltage being of the order of 600 volts. The thyristor trigger is connected, via a resistor 55 in parallel with a capacitor 56, to the cathode of the thyristor connected to terminal 45.

D'autre part, cette gâchette est également reliée par une résistance 17 à la sortie 11 d'un circuit 18 CMOS « EFCIS du type EFB8305, basé sur le comptage d'impulsions fournies par un oscillateur réglable.On the other hand, this trigger is also connected by a resistor 17 to the output 11 of a circuit 18 CMOS "EFCIS of the type EFB8305, based on the counting of pulses supplied by an adjustable oscillator.

Le potentiomètre permet d'effectuer un premier réglage de la fréquence de l'oscillateur. D'autre part, le câblage du circuit CMOS effectué une fois pour toutes à la fabrication, permet de choisir le nombre d'impulsions comptées, au bout desquelles de compteur n'alimente plus la gâchette du thyristor.The potentiometer allows you to make an initial adjustment of the oscillator frequency. On the other hand, the wiring of the CMOS circuit carried out once and for all during manufacture, makes it possible to choose the number of pulses counted, at the end of which counter no longer supplies the trigger of the thyristor.

En reliant les bornes 6 et 7 du circuit 18 au point A ou à la borne 45, on modifie le nombre d'impulsions comptées suivant le tableau donné par le constructeur du circuit 18.By connecting terminals 6 and 7 of circuit 18 to point A or terminal 45, the number of pulses counted is modified according to the table given by the manufacturer of circuit 18.

A la fermeture du contact K, la gâchette du thyristor est alimentée et le thyristor conduit.When contact K is closed, the trigger of the thyristor is supplied and the thyristor conducts.

A l'ouverture du contact K, le signal de commande du comptage est donné. Le thyristor 51, après un temps réglable, cesse de conduire, n'alimentant plus la charge à commander.When the contact K opens, the counting control signal is given. The thyristor 51, after an adjustable time, stops driving, no longer supplying the load to be controlled.

Le circuit CMOS comporte une remise à zéro automatique interne des bascules de comptage à chaque disparition de la tension d'alimentation.The CMOS circuit includes an automatic internal reset of the counting flip-flops each time the supply voltage disappears.

Le circuit 18 doit être relié par ses bornes 8, 9, 12 à la borne 45. Pour fonctionner, le circuit 18 doit être alimenté par un circuit d'alimentation dont la sortie A est reliée aux bornes 16, 13, 10 du circuit 18, et commandé par un circuit de commande 24 dont la sortie C est reliée aux bornes 1, 14, 15 du circuit 18.Circuit 18 must be connected by its terminals 8, 9, 12 to terminal 45. To operate, circuit 18 must be supplied by a supply circuit whose output A is connected to terminals 16, 13, 10 of circuit 18 , and controlled by a control circuit 24 whose output C is connected to terminals 1, 14, 15 of circuit 18.

Une résistance 27 de limitation du courant en cas de surtension est reliée à la borne 42 d'une part et, d'autre part, à la borne 45 du pont par un écréteur 28 protégeant le circuit d'alimentation.A resistor 27 for limiting the current in the event of an overvoltage is connected to the terminal 42 on the one hand and, on the other hand, to the terminal 45 of the bridge by a clipper 28 protecting the supply circuit.

Le point commun à la résistance 27 et à l'écréteur 28 est relié à l'anode d'une diode 29 effectuant un redressement simple alternance dont la cathode est branchée à une diode Zener 30 montée en inverse et dont l'anode est reliée, d'une part, à la cathode d'une diode 26 et, d'autre part, au circuit d'alimentation en courant 23 constitué par le collecteur d'un transistor NPN 234 dont l'émetteur est relié au collecteur d'un deuxième transistor NPN 233, par une diode 235 de protection contre les parasites et les surtensions, branchée en direct.The point common to the resistor 27 and to the clipper 28 is connected to the anode of a diode 29 carrying out a single alternation rectification whose cathode is connected to a Zener diode 30 mounted in reverse and whose anode is connected, on the one hand, to the cathode of a diode 26 and, on the other hand, to the current supply circuit 23 constituted by the collector of an NPN transistor 234 whose emitter is connected to the collector of a second NPN transistor 233, by a diode 235 for protection against parasites and overvoltages, connected directly.

L'émetteur du deuxième transistor 233 est relié à la borne 45 par une résistance 237 en série avec une diode 238 branchée en direct, évitant la polarisation en inverse de la jonction base-émetteur du transistor 233 tors d'une coupure du réseau, et un condensateur 239 servant à maintenir un niveau stabilisé d'aliméntation.The emitter of the second transistor 233 is connected to terminal 45 by a resistor 237 in series with a diode 238 connected directly, avoiding reverse polarization of the base-emitter junction of transistor 233 when the network is cut off, and a capacitor 239 serving to maintain a stabilized level of supply.

Le collecteur du premier transistor 234 est relié par une résistance 230 à sa base qui est elle-même reliée à la base du deuxième transistor 233 par une résistance 231.The collector of the first transistor 234 is connected by a resistor 230 to its base which is itself connected to the base of the second transistor 233 by a resistor 231.

Enfin, la base du deuxième transistor 233 est reliée à la borne 45 par une diode Zener de stabilisation 236, montée en inverse.Finally, the base of the second transistor 233 is connected to terminal 45 by a Zener stabilization diode 236, mounted in reverse.

Le point commun A à la diode 238 et au condensateur 239 est branché aux entrées d'alimentation du circuit CMOS.The common point A to the diode 238 and to the capacitor 239 is connected to the power supply inputs of the CMOS circuit.

L'anode de la diode 26 est reliée, d'une part, à la borne 41 et, d'autre part, à l'anode d'une diode 31, effectuant un redressement simple alternance.The anode of the diode 26 is connected, on the one hand, to the terminal 41 and, on the other hand, to the anode of a diode 31, performing a single alternation rectification.

La cathode de cette diode redresseuse est reliée par une résistance 32 au point C qui est branché à l'entrée de commande du circuit CMOS d'une part, et, d'autre part, à la borne 45 par un circuit 24 fournissant une tension de commande Vc stabilisée et lissée, constitué par un condensateur 243, une diode Zener 244, une résistance 245, montés en parallèle.The cathode of this rectifier diode is connected by a resistor 32 at point C which is connected to the control input of the CMOS circuit on the one hand, and, on the other hand, to terminal 45 by a circuit 24 providing a voltage stabilized and smoothed control Vc, consisting of a capacitor 243, a Zener diode 244, a resistor 245, connected in parallel.

Un circuit de signalisation 25 est branché par une résistance 251 au point A d'alimentation, par la cathode d'une diode électroluminescente 252 à la borne 45, par deux diodes 253 et 254, dont les cathodes sont respectivement reliées aux sorties 11 et 2 du circuit CMOS et ayant chacune l'anode reliée au point commun à la résistance 251 et à la diode 252.A signaling circuit 25 is connected by a resistor 251 to the supply point A, by the cathode of a light-emitting diode 252 at terminal 45, by two diodes 253 and 254, the cathodes of which are respectively connected to the outputs 11 and 2 of the CMOS circuit and each having the anode connected to the common point of the resistor 251 and the diode 252.

La borne du circuit 18 est reliée par l'intermédiaire d'un circuit inverseur interne au circuit 18 à la borne 1, sur laquelle arrive le signal de commande.The terminal of circuit 18 is connected via an internal inverter circuit to circuit 18 to terminal 1, on which the control signal arrives.

Par son branchement, on comprend que la diode électroluminescente sera éclairée lorsque deux conditions seront remplies simultanément :

  • - conduction du thyristor et interrupteur K ouvert, c'est-à-dire pendant la période de temporisation.
By its connection, it is understood that the light-emitting diode will be lit when two conditions are fulfilled simultaneously:
  • - thyristor conduction and switch K open, that is to say during the delay period.

En fonctionnement, les diodes 29, 30, 26 sont montées de façon que la diode 29 soit sous tension directe et la diode 26 sous tension inverse lorsque le contact K est ouvert, ce qui permet au courant passant par la borne 42 d'alimenter le circuit d'alimentation 23, alors que le circuit de commande n'est pas alimenté.In operation, the diodes 29, 30, 26 are mounted so that the diode 29 is under direct voltage and the diode 26 under reverse voltage when the contact K is open, which allows the current passing through the terminal 42 to supply the supply circuit 23, while the control circuit is not supplied.

D'autre part, lorsque le contact K est fermé, la diode 29 n'est pas conductrice et la tension de la diode Zener 30 s'oppose à ce que le courant du circuit d'alimentation 23 circule dans la branche 27, 29, 30.On the other hand, when the contact K is closed, the diode 29 is not conductive and the voltage of the Zener diode 30 prevents the current from the supply circuit 23 from flowing in the branch 27, 29, 30.

Ainsi, le courant qui provient du contact K sert à alimenter d'une part, le circuit de commande 24 et, d'autre part, le circuit d'alimentation 23 par la diode 26.Thus, the current which comes from contact K is used to supply on the one hand, the control circuit 24 and, on the other hand, the supply circuit 23 by the diode 26.

En fermant le contact K, on alimente aussitôt la commande du circuit CMOS et la gâchette du thyristor par le circuit CMOS 18.By closing the contact K, the control of the CMOS circuit and the trigger of the thyristor are immediately supplied by the CMOS circuit 18.

Le thyristor conduit et permet l'alimentation du relais, ceci tant que le contact K reste fermé.The thyristor conducts and supplies power to the relay, as long as the contact K remains closed.

A l'ouverture du contact, le circuit CMOS, alimenté par le circuit d'alimentation 23, va compter les impulsions. Au bout d'un temps réglable, correspondant à un nombre. déterminé d'impulsions à compter, le circuit n'alimente plus la gâchette du thyristor et la bobine B du relais, par voie de conséquence, n'est plus alimentée.When the contact opens, the CMOS circuit, supplied by the supply circuit 23, will count the pulses. After an adjustable time, corresponding to a number. determined by pulses to be counted, the circuit no longer supplies the thyristor trigger and the coil B of the relay, consequently, is no longer supplied.

Claims (5)

1. A circuit for supplying a contact (K), controlling a function with at least a time delay or memorization, in a user circuit (U) supplied with an AC or DC voltage, at its input terminals (E, 44) and whose output (D) is driven by the output of an integrated circuit (L, 18), also connected to the other output terminal (45) of the user circuit, said integrated circuit being controlled by at least one control circuit (24) supplying a constant voltage and being fed by a supply circuit (23) supplying a practically constant current to the integrated circuit, characterized in that the control circuit is connected to the mains voltage through a series circuit formed by a first resistor (32), a first diode (31), and a contact (K), whereas the current supply circuit (23) is connected to the voltage of the network, either by a second reversely-connected diode (26) and contact (K) or by a first Zener diode (30), a third diode (29) and a second resistor (27).
2. The supply circuit as claimed in claim 1, characterized in that the control circuit (24) comprises a first capacitor (243), a second Zener diode (244), and a third resistor (245) connected in parallel to the said output terminal (45) of the user circuit.
3. The contact supply circuit as claimed in claim 1 or 2, characterized in that the circuit (23) for supplying the integrated circuit is formed by a first transistor . (234) connected in cascade through a fourth diode (235) with a second transistor (233), whose emitter is connected through a fourth resistor (237) and a fifth diode (238) to the supply inputs of the integrated circuit (L, 18), on the one hand, and, on the other hand, through a second capacitor (239) to the said other output terminal (45) of the user circuit, said transistors being biased by a third Zener diode (236), a fifth resistor (231) between the two bases and a sixth resistor (230) connecting the base of the first transistor (234) to its collector.
4. The supply circuit as claimed in one of the preceding claims, characterized in that the output of the supply circuit (23) is connected to a seventh resistor (251) being part of a signalling circuit, the output of the control circuit (24) is connected, through an invertor, to the cathode of a sixth diode (254) of the signalling circuit (25), whose anode is connected to the anode of a seventh diode (253) connected by its cathode to the output of the integrated circuit (L, 18), said seventh resistor (251) being connected through a light-emitting diode (252) to the said output terminal (45), the common point to said sixth and seventh diodes (253, 254) being connected to the common point to the light-emitting diode (252) and to said seventh resistor (251).
5. The supply circuit as claimed in claims 1 to 4, characterized in that the user circuit is formed by the coil of a relay (B) connected in series with a diode bridge (47, 48, 49, 50) whose outputs (45, 46) are connected to a thyristor (51) in parallel with a third capacitor (53) and an eighth resistor (52), the gate of the thryristor being connected through a divider bridge (55, 17) and a fourth capacitor (56) connected in parallel across a ninth user resistor (55), which is connected to the output (11) of the integrated circuit, formed by a circuit for counting the pulses (18) supplied by an adjustable oscillator (19, 20, 21, 22).
EP83400210A 1982-02-12 1983-01-31 Energising circuit for a control contact and its application to the control of an off-delay timer of a relay Expired EP0086689B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400210T ATE14809T1 (en) 1982-02-12 1983-01-31 POWER CIRCUIT FOR A CONTROL CONTACT AND ITS APPLICATION IN CONTROLLING THE OFF DELAY OF A RELAY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8202356A FR2521771A1 (en) 1982-02-12 1982-02-12 CONTROL CONTACT POWER SUPPLY CIRCUIT AND ITS APPLICATION TO CONTROL RELAY REST TIMING
FR8202356 1982-02-12

Publications (2)

Publication Number Publication Date
EP0086689A1 EP0086689A1 (en) 1983-08-24
EP0086689B1 true EP0086689B1 (en) 1985-08-07

Family

ID=9270954

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400210A Expired EP0086689B1 (en) 1982-02-12 1983-01-31 Energising circuit for a control contact and its application to the control of an off-delay timer of a relay

Country Status (9)

Country Link
US (1) US4480194A (en)
EP (1) EP0086689B1 (en)
JP (1) JPS58147916A (en)
AT (1) ATE14809T1 (en)
CA (1) CA1194588A (en)
DE (1) DE3360485D1 (en)
ES (1) ES8401279A1 (en)
FR (1) FR2521771A1 (en)
NO (1) NO159046C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582881B1 (en) * 1985-05-31 1995-01-06 Commissariat Energie Atomique STATIC ELECTRONIC RELAY AUTHORIZING OR ESTABLISHING ANY SENSE CURRENT OR AN ALTERNATING CURRENT IN A CIRCUIT OF USE.
FR2689258B1 (en) * 1992-03-26 1996-12-13 Cegelec INFORMATION INPUT MODULE BY ELECTRIC CONTACT, FOR CONTROL / CONTROL INSTALLATION.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029351A (en) * 1958-12-19 1962-04-10 Ibm Contact driver circuit
US3281829A (en) * 1963-12-20 1966-10-25 Burroughs Corp Contact wetter and encoder
DE1690026C3 (en) * 1967-08-10 1979-02-01 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for delayed implementation of a switching process
US3814949A (en) * 1972-09-18 1974-06-04 S Weinberg Timing control device
US3784881A (en) * 1972-10-10 1974-01-08 Cutler Hammer Inc Off-delay timing apparatus
DE3009011C2 (en) * 1980-03-08 1983-03-24 Agfa-Gevaert Ag, 5090 Leverkusen Circuit arrangement for controlling camera functions
US4415943A (en) * 1982-04-21 1983-11-15 Tii Industries, Inc. Equipment protector and energy saving apparatus

Also Published As

Publication number Publication date
CA1194588A (en) 1985-10-01
ES519712A0 (en) 1983-12-01
JPS58147916A (en) 1983-09-02
DE3360485D1 (en) 1985-09-12
US4480194A (en) 1984-10-30
ATE14809T1 (en) 1985-08-15
EP0086689A1 (en) 1983-08-24
FR2521771A1 (en) 1983-08-19
FR2521771B1 (en) 1984-04-13
NO159046B (en) 1988-08-15
NO830473L (en) 1983-08-15
ES8401279A1 (en) 1983-12-01
NO159046C (en) 1988-11-23

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