CN2194050Y

CN2194050Y - Electronic delay-action circuit breaker

Info

Publication number: CN2194050Y
Application number: CN 94209843
Authority: CN
Inventors: 周继荣; 虞锡静
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-04-29
Filing date: 1994-04-29
Publication date: 1995-04-05
Anticipated expiration: 2004-04-29

Abstract

An electronic delay-action circuit breaker comprises a bridge rectifier circuit which is composed of V1-V4. The carry-in terminal of the rectification bridge is in parallel connected with a luminescence indicating diode HL and a protective resistor R1 which is in series connected with the luminescence indicating diode HL. The output terminal of the rectification bridge is connected with a button switch SB, a silicon control V8 and a triggering control circuit and time-delay control circuit which are connected with the triggering terminal of the rectification bridge. Because adopting quick differential pressure charging circuit, compared with current technology, the delaying time of the utility model almost does not concern with the time of pressing down the switch and the utility model is rapidly to touch off. The differential pressure discharge circuit adopts variable resistance. So, the time-delay is adjustable. And the utility model can prolong delay time multiple and realizes multi-gang function according to request. The use and the installation of the utility model is consistent with normal button switch. The utility model is convenient and practical.

Description

Electronic delay-action circuit breaker

The utility model relates to a kind of electronic switch, particularly a kind of electronic time-delay switch with time delayed turn-off function.

Corridor switch in the building is still common mechanical contact-type switch mostly at present, has wasted a large amount of electric energy, and has also had many other occasions need have the switch of time delayed turn-off function.Constantly designing by delay switch at this situation people, at first is pneumatic type mechanical delay switch, and the electronic time-delay switch of more convenient practicality then also is devised, and has realized the hope that turns off the light when you leave.But existing electronic time-delay switch adopts electric capacity as charge storage element, this defective of ubiquity: promptly the time interval of time delayed turn-off is directly proportional with pressing the time of switch to the electric capacity charging, for longer time-delay have to more than by push-button switch for a moment.Such as the disclosed scheme of Chinese patent CN2095515U " multifunction switch ", it with a controllable silicon as switch executing element, RC charging and discharging circuit by the controllable silicon trigger end reaches the time delayed turn-off purpose, controllable silicon need be after electric capacity be charged to a certain degree could conducting, the long more charging of time of electric capacity charging (promptly pressing switch) is many more, as seen quick conducting and long delay are can't eat one's cake and have it in this scheme, it is its inherent shortcoming, lack extra anti-jamming circuit simultaneously, when line voltage was too high, controllable silicon was easy to mislead because of overvoltage.

The purpose of this utility model provides a kind of electronic time-delay switch that has quick conducting and long delay characteristic and strong interference immunity simultaneously with regard to being for the defective that overcomes above-mentioned prior art.

Another purpose of the present utility model provides the adjustable electronic time-delay switch of a kind of delay time.

The purpose of this utility model is achieved in that electronic time-delay switch comprises bridge rectifier, its input is parallel with luminous indicating diode, its output termination push-button switch, controllable silicon reach trigger control circuit and the delay control circuit that links to each other with its trigger end, are parallel with the anti-interference capacitor of low-capacitance at described bridge rectifier output; The quick charge triggering loop that described controllable silicon trigger control circuit is made of small resistor, big electric capacity reaches the diac that is connected in series with the controllable silicon trigger end and forms; The timing circuit at a slow speed that quick charge loop that delay control circuit is made of diode, electric capacity and electric capacity and big resistance constitute is formed.

For making delay time adjustable, can adopt variable resistor in the described RC discharge loop.

For making delay time longer, can a plurality of described controllable silicon delay control circuits arbitrarily in parallel.

Realize multi-joint function for reaching strange land control, can a plurality of described push-button switches arbitrarily in parallel.

The utility model compared with prior art, because of having adopted event time-delay length in quick charge loop almost to have nothing to do and having triggered rapid with the time that presses the button switch, discharge loop adopts variable resistor so time-delay is adjustable, also can prolong delay time as requested at double and realize multi-joint function, use installation consistent with the conventional push button switch, convenient and practical.

Description of drawings.

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Electronic time-delay switch comprises the bridge rectifier that V1～V4 forms, the protective resistance R1 that the input of rectifier bridge is parallel with luminous indicating diode HL and is connected in series with it, output termination push-button switch SB, the controllable silicon V8 of rectifier bridge and the trigger control circuit that links to each other with its trigger end 1. with delay control circuit 2., the anti-interference capacitor that also is parallel with low-capacitance at described bridge rectifier output is to prevent thunder and lightning, to impact electrical interference that protection controllable silicon V8 avoids over-voltage breakdown or misleads;

The quick charge that 1. described controllable silicon trigger control circuit is made of resistance R 2, capacitor C 2 triggers the loop and the diac V5 that is connected in series with controllable silicon V8 trigger end C forms, and resistance R 2 resistances are less and capacitor C 2 appearance values are bigger here;

Described delay control circuit is made up of diode V6, capacitor C 3, resistance R W, and diode V6, capacitor C 3 constitute the quick charge loop, and capacitor C 3, resistance R W constitute timing circuit at a slow speed, and resistance R W adopts potentiometer and preferably selects for use resistance bigger here.

During work, if do not press SB, V8 does not trigger, the ac blocking-up, and bridge circuit does not form current circuit, and the EL bulb does not work, and the HL light-emitting diode is bright indicates as the position of the switch; If when pressing SB, alternating current is given C3, C2 charging respectively through V6, R2; When G point current potential equaled trigger voltage, controllable silicon V8 triggered, the ac conducting; Capacitor C 2, the C3 end of charging, AC220V forms the loop through V1～V4, V8, and the EL bulb is bright, and the HL light-emitting diode is extinguished by short circuit.Less when the R2 resistance, when C2 appearance value was big, G point current potential can raise rapidly, and V8 almost can the moment conducting.

R2C2 has determined the charging interval; Though C2, C3 charging interval are identical,,, promptly realized the pressure reduction charging so the charging voltage of C3 is far longer than the charging voltage of C2 because the V6 forward resistance is far smaller than the resistance of R2.According to electric field energy formula: Wc=1/2CU ² ₀, square being directly proportional of the electric weight of electric capacity and voltage is for long delay provides theoretical foundation.

V8 provides enough keep electric current by RW to its trigger end G by C2, C3 after triggering, and guarantees the ac conducting, makes EL bulb delay working.

When capacitor discharge time reaches the definite value of circuit design, i.e. U ₀Be lower than the V8 trigger voltage, according to the silicon controlled characteristic, the EL operating voltage is cut off in the zero passage blocking-up, and the EL bulb goes out, and the HL light-emitting diode is bright.

As shown in Figure 1, for delay time is multiplied, can multichannel arbitrarily in parallel with the described delay control circuit extra level that 2. structure is identical 3., make more electric capacity participate in charge and discharge process, progression in parallel in theory is unlimited, and in actual applications, generally delay time and can satisfy common time control requirement in 2 hours.

As shown in Figure 1, owing to use push-button switch, be easy to by any a plurality of push-button switches of parallel connection to reach the purpose of multi-joint control or strange land control.

Product form of the present utility model is a push-button switch, and is in full accord with installing and using of conventional push button switch.

Claims

1, a kind of electronic time-delay switch; comprise the bridge rectifier that V1～V4 forms; the protective resistance R1 that the input of rectifier bridge is parallel with luminous indicating diode HL and is connected in series with it; the output two ends of rectifier bridge be connected to controllable silicon V8 and the trigger control circuit in parallel with it 1. with delay control circuit 2.; 1. be connected in series push-button switch SB in the anode a of controllable silicon V8 and trigger control circuit between, it is characterized in that:

A. 1. described controllable silicon trigger control circuit is made up of resistance R 2, capacitor C 2 and diode V5, the output two ends that resistance R 2, capacitor C 2 are serially connected in rectifier bridge constitute quick charge triggering loop, anodal termination capacitor C 2 positive poles of diode V5, the trigger end G of negative pole termination controllable silicon V8;

B. 2. described delay control circuit is made up of diode V6, capacitor C 3, resistance R W, and diode V6, capacitor C 3 are serially connected in the output two ends of rectifier bridge, and the positive pole of resistance R W one termination capacitor C3, the positive pole of another termination capacitor C 2 constitute timing circuit at a slow speed.

2, electronic time-delay switch as claimed in claim 1 it is characterized in that resistance R 2 resistances are less, and capacitor C 2 appearance values is bigger.

3, electronic time-delay switch as claimed in claim 1 is characterized in that described resistance R W adopts the bigger potentiometer of resistance.

4, electronic time-delay switch as claimed in claim 1 is characterized in that described bridge rectifier output also is parallel with the anti-interference capacitor of Da Rong value.

5,3. electronic time-delay switch as claimed in claim 1 is characterized in that being parallel with any multichannel and the described delay control circuit extra level that 2. structure is identical.

6, electronic time-delay switch as claimed in claim 1 is characterized in that described push-button switch SB can multichannel arbitrarily in parallel.