US3349293A - Automatic electron time-switches - Google Patents

Automatic electron time-switches Download PDF

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Publication number
US3349293A
US3349293A US440099A US44009965A US3349293A US 3349293 A US3349293 A US 3349293A US 440099 A US440099 A US 440099A US 44009965 A US44009965 A US 44009965A US 3349293 A US3349293 A US 3349293A
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Prior art keywords
time
contact
circuit
relay
switch
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Expired - Lifetime
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US440099A
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English (en)
Inventor
Peffer Raymond
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"ETABLISSEMENTS GERARD MANG"
MANG ETS GERARD
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MANG ETS GERARD
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/28—Modifications for introducing a time delay before switching
    • H03K17/288—Modifications for introducing a time delay before switching in tube switches

Definitions

  • the invention provides an automatic electron timeswitch comprising a main relay of which the energisation is controlled by depressing the control knob, and a time-lag system of which the energisation is controlled in turn by said relay, this automatic time-switch being characterized in that the main relay is of the socalled step-by-step type having two stable positions, and that its contacts control on the one hand the passage and the breaking of the load current and on the other hand the energisation of the tirne-lag device of which the circuit comprises a condenser having connected in parallel across its terminals a branch circuit comprising a gasfilled lamp and the winding of a secondary relay controlling the closing of a conductor adapted likewise to energise the main relay.
  • FIGURES 1 to 4 are wiring diagrams corresponding each to one of these four form of embodiment.
  • the automatic electron time-switch illustrated in FIG- URE 1 comprises a main replay RP of a special type, that is, a step-by-step controlled pulse relay of which the main contact RP has two stable positions.
  • a main replay RP of a special type, that is, a step-by-step controlled pulse relay of which the main contact RP has two stable positions.
  • the coil of this relay may be energised from a suitable mains distributor designated by the reference letters DI, for example a 110-volt A.C. mains.
  • This relay controls the supply of current to a load circuit U as well as to a time-lag device comprising a condenser C having connected in parallel across it terminals a branch circuit comprising a gas-filled lamp L and the winding of a secondary relay RX adapted to control the opening of the time-switch circuit.
  • the diagram may be divided into four main sections.
  • the charging circuit of condenser C and the discharge circuit thereof constitute somewhat the complete circuit ice of the automatic time-lag device, which is designated as a whole by the reference numeral 5.
  • the control circuit of the main relay RP comprises a push-button BP mounted in parallel with the contact RX of an auxiliary relay, this assembly being connected in series with the coil of the main relay RP.
  • the two ends of this control circuit are designated by the letters A and B, the end A (on the push-button side) being connected through a conductor 1 to the mains terminal F while the other end B (coil side) is connected through another conductor 2 to the mains terminal G.
  • control push-buttons may be connected in parallel.
  • the charging circuit of condenser C consists of a resistance R connected in series with the condenser C.
  • the charging current is controlled directly by the value of this resistance R which may therefore be variable in order to increase the range of permissible adjustment.
  • the assembly consisting of condenser C and resistance R is connected in parallel with a resistance R connected in series with a potentiometer P and a rectifying cell S.
  • a switch T permits of opening the charging circuit, if necessary.
  • This circuit which consists of a conductor 10, is connected to the other mains terminal (terminal G) through the main contact RP of main relay RP, and through conductors 3 and 2.
  • potentiometer P is to adjust the potential dilference across the terminal of resistance R and therefore the charging current flowing through resistance R III.
  • the discharge circuit comprises, in parallel with condenser C, a conductor 7 in which a gas-filled lamp (neon tube) L and the coil of auxiliary relay RX are inserted.
  • This condenser may also be discharged through the medium of another conductor 9 comprising a contact RP and connected in parallel to condenser C.
  • Contact RP (which is one of the contacts of the main relay RP) is a transient contact closing only when the coil of the main relay RF is energised.
  • the load circuit U is connected in parallel to the charging circuit of condenser C.
  • the terminal 4 of circuit U is connected to the mains terminal G through conductor 10, contact RP and conductor 2, the other terminal 6 of this circuit U being connected to the other terminal F.
  • This time-switch operates as follows:
  • the timeswitch is operated by depressing, even for a very short time, the push-button BP, thus energising the coil of main relay RP.
  • the contact RP of this relay which was open, will close and cause on the one hand the energisation of the load circuit U and on the other hand the charging of the time-lag circuit 5 comprising the resistances and condenser C.
  • This time-lag may be adjusted at will by means of the potentiometer P.
  • the resistance R inserted in the circuit 5 may be of an adjustable type, so that several ranges of time-lag values may be obtained. Other resistances may also be inserted in the supply circuit in order to adapt the device to the mains voltage.
  • the user can reduce by a voluntary act the time-lag period without interfering in any manner with the time-switch adjustment and without adding any complementary element to the installation, since the circuit is open by depressing the same button as that used for closing it.
  • the automatic electron time-switch according to this invention is advantageous in that its operation is reliable and noiseless, and its wear is reduced practically to zero. Moreover, this automatic time-switch permits of operating the installation as a remote switching control, without any modification, since it is sufficient to depress the control push-button another time for breaking the load circuit before the predetermined time-lag of the time-switch has elapsed. The time period already elapsed during the first portion of the cycle is eliminated and is in no way deducted from the time-lag period of the next cycle.
  • P-2-megohm linear potentiometer RP-Step-by-step, S-volt-ampere main relay, RX10,000-ohm/ l-milliampere auxiliary relay, L-3 to S-milliampere output neon tube.
  • FIGURE 2 illustrates a modified diagram of the arrangement of FIGURE 1.
  • the transient discharge contact RP is replaced by a contact RP associated with the contact RP these two contacts constituting a double reversing contact.
  • This contact RP is therefore a back contact and has the same '4 function as contact RP
  • the construction of the main relay RP is simplified.
  • FIGURE 3 illustrates the diagram of a thirdform of embodiment of the automatic time-switch according to the present invention, which is so designed that depressing the push-button BP during a cycle of operation of the switch cannot break the load circuit U, as contrasted with the preceding forms of embodiment of FIGURES 1 and 2.
  • the main relay RP comprises a double reversing contact RP RP
  • this relay also comprises an auxiliary back contact RP inserted in the conductor 8 also comprising the push-button BP.
  • this contact when this contact is open, it prevents the depression of this push-button from controlling the operation of relay RP. Under these conditions during the operating time of the automatic time-switch it is not possible to cause another operation of relay RP and therefore to discontinue the supply of current to the load circuit U by re-actuating the push-button.
  • the automatic time-switch is released only through the time-lag system.
  • depressing the push-button will normally cause its resetting, for the auxiliary contact RP, is then closed.
  • the switch T is dispensed with, since it has no useful function.
  • FIGURE 4 illustrates the diagram of an automatic time-switch comprising the same component elements as the preceding forms of embodiment, but so designed as to provide the advantageous features set forth hereinabove.
  • This diagram may be compared with the diagram of FIGURE 1.
  • the main relay RP comprises, in addition to the main contact RP a double reversing contact T 2T3.
  • contact T2 is a back contact (closed in the de-energised condition) and contact T3 is a front contact (that is, closing when the relay is energised).
  • These two contacts have a common point H connected to the control push-button BP.
  • contact T3 is connected through a conductor 9a to a point D common to resistance R condenser C and gas discharge lamp L. As to contact T2, it is connected on the other hand to the winding of the main relay RP.
  • a specific feature of this diagram lies in the fact that the end points A and B of the control circuit of main relay RP are connected the opposite way with respect to the connections of FIGURE 1.
  • point A is connected to the mains terminal G through conductor 2
  • point B is connected to the mains terminal F through conduct-or 1.
  • This automatic time-switch operates as follows:
  • This last-named relay RP is thus operated to control the opening of its main contact RP as well as of its auxiliary contact T3, while closing the other auxiliary contact T2.
  • the time-lag period commences again from the moment the redepressed push-button BP is released. In fact, the current continues to flow without break through the time-lag circuit, since the main contact RP, remained constantly closed.
  • depressing the push-button BP during the operation of the system does not actuate any relay in the automatic time-switch, thus assisting in ensuring the noiseless operation of this device.
  • Automatic electron time-switch comprising a main relay of which the energis'ation is controlled by depressing a push-button, and a time-lag system of which the energisation is also controlled by means of said relay, said main relay being of the so-called step-by-step type having two stable positions and controlling by means of its contacts on the one hand the passage and break of current to the load circuit and on the other hand the application of voltage to the time-lag system, this time-lag system comprising a condenser having connected across its terminals a branch circuit comprising a gas-filled lamp and the Winding of a secondary relay controlling the closing of a conductor also adapted to supply energising current to said main relay.
  • said main relay comprises a front contact inserted in a conductor connecting one of the terminals of the mains on the one hand to said load circuit and on the other hand to the circuit of said time-lag system, said main relay also comprising a secondary contact of the transient closing type which is inserted in a conductor adapted to short-circuit the condenser of said time-lag system.
  • said main relay comprises a double reversing contact, one contact being a front contact inserted in a conductor connecting one of the mains terminals on the one hand to the load circuit and on the other hand to the circuit of the time-lag system, the other contact being a back contact inserted in a conductor adapted to short-circuit the condenser of said time-lag system.
  • said main relay comprises, in addition to said double reversing contact, an auxiliary contact which is a back contact inserted in the conductor in which said control push-button is inserted.
  • said main relay comprises a main front contact inserted in a conductor connecting one of the mains terminals on the one hand to the load circuit and on the other hand to the circuit of the time-lag system, said main relay further comprising a double reversing contact of which the back contact is inserted in the conductor comprising said control push-button, the front contact being inserted in a conductor adapted to short-circuit the condenser of the time-lag system when said push-button is de pressed.

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  • Keying Circuit Devices (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)
  • Relay Circuits (AREA)
US440099A 1964-03-17 1965-03-16 Automatic electron time-switches Expired - Lifetime US3349293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR967743A FR1410221A (fr) 1964-03-17 1964-03-17 Minuterie électronique

Publications (1)

Publication Number Publication Date
US3349293A true US3349293A (en) 1967-10-24

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Application Number Title Priority Date Filing Date
US440099A Expired - Lifetime US3349293A (en) 1964-03-17 1965-03-16 Automatic electron time-switches

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US (1) US3349293A (fr)
DE (1) DE1515654A1 (fr)
FR (1) FR1410221A (fr)
GB (1) GB1101891A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469108A (en) * 1965-07-21 1969-09-23 Lumoprint Zindler Kg Electric time switch
US3470538A (en) * 1966-12-28 1969-09-30 Allegheny Ludlum Steel Automatic start circuit for computer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8809288D0 (en) * 1988-04-20 1988-05-25 Mans H Time lag switching device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433254A (en) * 1946-01-07 1947-12-23 Aiken William Ross Electrical timing system
US2453486A (en) * 1945-01-01 1948-11-09 Picker X Ray Corp Waite Mfg Electronic timer
US2889495A (en) * 1957-07-18 1959-06-02 Edward B Farmer Electric timing device
US2965814A (en) * 1957-05-21 1960-12-20 Zindler Lumoprint Kg Method of and circuit arrangement for timing photographic and other processes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2453486A (en) * 1945-01-01 1948-11-09 Picker X Ray Corp Waite Mfg Electronic timer
US2433254A (en) * 1946-01-07 1947-12-23 Aiken William Ross Electrical timing system
US2965814A (en) * 1957-05-21 1960-12-20 Zindler Lumoprint Kg Method of and circuit arrangement for timing photographic and other processes
US2889495A (en) * 1957-07-18 1959-06-02 Edward B Farmer Electric timing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3469108A (en) * 1965-07-21 1969-09-23 Lumoprint Zindler Kg Electric time switch
US3470538A (en) * 1966-12-28 1969-09-30 Allegheny Ludlum Steel Automatic start circuit for computer

Also Published As

Publication number Publication date
FR1410221A (fr) 1965-09-10
DE1515654A1 (de) 1969-08-14
GB1101891A (en) 1968-01-31

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