CN202351726U - Resistance and capacitance step-down control circuit - Google Patents
Resistance and capacitance step-down control circuit Download PDFInfo
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- CN202351726U CN202351726U CN2011204204705U CN201120420470U CN202351726U CN 202351726 U CN202351726 U CN 202351726U CN 2011204204705 U CN2011204204705 U CN 2011204204705U CN 201120420470 U CN201120420470 U CN 201120420470U CN 202351726 U CN202351726 U CN 202351726U
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Abstract
The utility model relates to a resistance and capacitance step-down control circuit applied to a home appliance. The phenomena such as over-temperature, breakdown and burnout of components in the conventional resistance and capacitance step-down circuit are easily produced. The resistance and capacitance step-down control circuit is characterized in that a varistor ZNR1, a capacitor C1 and a resistor R1 form a power surge impact prevention circuit; the resistor R1 and a step-down current limiting capacitor C2 form a power current limiting circuit; the step-down current limiting capacitor C2 and a resistor R2 form a power step-down circuit; bridge rectifiers D1 to D4 form a rectification circuit; a resistor R3, a Zener diode ZD2, an electrolytic capacitor EC2, a capacitor C4 and an electrolytic capacitor EC5 form a voltage to current converter (VCC) of the control circuit; and a relay JD1, a triode Q1, a triode Q2 and a resistor R4 form a relay control circuit. The phenomena such as over-temperature, capacity drop, high breakdown rate and burnout of the components are effectively avoided.
Description
Technical field
The utility model relates to control circuit, specifically a kind of resistance-capacitance depressurization control circuit that is applied in the household electrical appliance.
Background technology
In recent years, the resistance-capacitance depressurization circuit is used widely in household electrical appliance, and its main cause is that cost is low, the use components and parts are few, power consumption is little; But also there is weak point in the resistance-capacitance depressurization circuit, and voltage stabilizing diode, decompression capacitor, the easy appearance temperature of current-limiting resistance be too high, puncture or phenomenon such as burn.
The utility model content
The utility model technical matters to be solved is to overcome the defective that above-mentioned prior art exists, and a kind of improved resistance-capacitance depressurization control circuit is provided, with avoid voltage stabilizing diode, decompression capacitor and current-limiting resistance appearance temperature too high, puncture or burn phenomenon.
For this reason; The technical scheme that the utility model adopts is following: a kind of resistance-capacitance depressurization control circuit comprises power supply ACL, power supply ACN, resistance R 1, resistance R 2, resistance R 3, resistance R 4, voltage dependent resistor (VDR) ZNR1, capacitor C 1, step-down current limiting capacitance C2, capacitor C 3, capacitor C 4, rectifier bridge D1-D4, voltage stabilizing diode ZD1, voltage stabilizing diode ZD2, electrochemical capacitor EC1, electrochemical capacitor EC2, electrochemical capacitor EC5, diode D5, triode Q1, triode Q2, relay J D1;
It is characterized in that: the end of power supply ACL, voltage dependent resistor (VDR) ZNR1, an end of capacitor C 1 link to each other with an end of resistance R 1; 3 places of the other end of the other end of power supply ACN, voltage dependent resistor (VDR) ZNR1, capacitor C 1, rectifier bridge D1-D4 link to each other with the IN of relay J D1 end; The end of the other end of resistance R 1, step-down current limiting capacitance C2 links to each other with an end of resistance R 2; The other end of step-down current limiting capacitance C2, the other end of resistance R 2 link to each other with 1 place of rectifier bridge D1-D4; 4 places of rectifier bridge D1-D4 link to each other with the negative pole of control circuit; The collector of the positive pole of the negative electrode of 2 places of rectifier bridge D1-D4, an end of relay J D1 coil, voltage stabilizing diode ZD1, an end of capacitor C 3, electrochemical capacitor EC1, the negative electrode of diode D5, triode Q1 links to each other with an end of resistance R 4; One end of the emitter of the anode of the negative pole of the other end of the anode of the other end of relay J D1 coil, voltage stabilizing diode ZD1, capacitor C 3, electrochemical capacitor EC1, diode D5, triode Q1, resistance R 3, the positive pole of electrochemical capacitor EC2 link to each other with an end of capacitor C 4; The positive pole of the other end of resistance R 3, electrochemical capacitor EC5 links to each other with voltage stabilizing diode ZD2 negative electrode; The other end of the base stage of triode Q1, resistance R 4 links to each other with the collector of triode Q2; The emitter of the anode of the negative pole of the other end of the negative pole of electrochemical capacitor EC2, capacitor C 4, electrochemical capacitor EC5, voltage stabilizing diode ZD2, triode Q2 links to each other with the negative pole of control circuit, and the base stage of triode Q2 (A point) connects control signal;
Described voltage dependent resistor (VDR) ZNR1, capacitor C 1 and resistance R 1 constitute the anti-surge of power supply and impact circuit; Described resistance R 1 constitutes the power supply current-limiting circuit with step-down current limiting capacitance C2; Described step-down current limiting capacitance C2 and resistance R 2 constitute the power supply reduction voltage circuit; Described rectifier bridge D1-D4 constitutes rectification circuit; Described voltage stabilizing diode ZD1, capacitor C 3, electrochemical capacitor EC1 and diode D5 constitute the relay coil feed circuit, and described resistance R 3, voltage stabilizing diode ZD2, electrochemical capacitor EC2, capacitor C 4 and electrochemical capacitor EC5 constitute the VCC of control circuit, and described relay J D1, triode Q1, triode Q2 and resistance R 4 constitute control relay circuits.
The utility model circuit working principle: when ACN and ACL connect AC power behind anti-surge impact circuit; ACL connects the R1 current limliting after reduction voltage circuit R2C2 connects the bridge rectifier circuit of 1 place of D1-D4 and the 3 places entering D1-D4 composition that ACL meets D1-D4, and the control circuit load is connected between ACL and the OUT.
When need of load is broken off; 2 place's electric currents of rectification circuit D1-D4 are through the base stage this moment Q1 conducting of R4 to Q1; Electric current is from the current collection base of Q1 to emitter after the very little adhesive that can not satisfy relay of voltage of relay coil (this moment); After the step-down of R3 current limliting, after EC5 filtering, obtain a stable VCC voltage through EC2 and C4 filtering through the voltage after the ZD2 voltage stabilizing.
When need of load is connected; Control circuit is to the base stage input high level signal of Q2; Q2 conducting this moment drags down the high level of Q1 base stage and is directed at Q1 one-tenth cut-off state, and 2 place's electric currents of D1-D4 flow through through the JD1 coil and form pressure drop through the voltage stabilizing of ZD1 voltage stabilizing diode after rectification this moment, and EC1, C3 filtering, D5 clamper make the JD1 voltage reach adhesive; Load conducting work; Electric current is through behind the JD1 coil, after the step-down of R3 current limliting, through EC5 filtering after obtains a stable VCC voltage through the voltage after the ZD2 voltage stabilizing through EC2 and C4 filtering.
When the relay adhesive was worked, the power consumption of control circuit increased, and this moment, the control circuit power unit was formed the dual power supply pattern, supplied the normal adhesive work of relay.When relay disconnection work; The power consumption of control circuit reduces; This moment, the control circuit power unit had only one the tunnel to supply VCC, did not have unnecessary kwh loss on each former device, had avoided phenomenons such as the components and parts appearance temperature is too high, capacity descends, be prone to puncture, burn.
Above-mentioned resistance-capacitance depressurization control circuit, step-down current limiting capacitance C2 is high pressure resistant polarity free capacitor; Voltage stabilizing diode ZD1 adopts two or more voltage stabilizing diode series connection to replace.
The beneficial effect of the utility model is effectively to have avoided phenomenons such as the components and parts appearance temperature is too high, capacity descends, be prone to puncture, burn.
Below in conjunction with Figure of description and embodiment the utility model is further specified.
Description of drawings
Fig. 1 is the circuit diagram of the utility model.
Embodiment
As shown in the figure; The end of power supply ACL, voltage dependent resistor (VDR) ZNR1, an end of capacitor C 1 link to each other with an end of resistance R 1; 3 places of the other end of the other end of power supply ACN, voltage dependent resistor (VDR) ZNR1, capacitor C 1, rectifier bridge D1-D4 link to each other with the IN of relay J D1 end; The end of the other end of resistance R 1, step-down current limiting capacitance C2 links to each other with an end of resistance R 2; The other end of step-down current limiting capacitance C2, the other end of resistance R 2 link to each other with 1 place of rectifier bridge D1-D4; 4 places of rectifier bridge D1-D4 link to each other with the negative pole of control circuit; The collector of the positive pole of the negative electrode of 2 places of rectifier bridge D1-D4, an end of relay J D1 coil, voltage stabilizing diode ZD1, an end of capacitor C 3, electrochemical capacitor EC1, the negative electrode of diode D5, triode Q1 links to each other with an end of resistance R 4; One end of the emitter of the anode of the negative pole of the other end of the anode of the other end of relay J D1 coil, voltage stabilizing diode ZD1, capacitor C 3, electrochemical capacitor EC1, diode D5, triode Q1, resistance R 3, the positive pole of electrochemical capacitor EC2 link to each other with an end of capacitor C 4; The positive pole of the other end of resistance R 3, electrochemical capacitor EC5 links to each other with voltage stabilizing diode ZD2 negative electrode; The other end of the base stage of triode Q1, resistance R 4 links to each other with the collector of triode Q2, and the anode of the other end of the negative pole of electrochemical capacitor EC2, capacitor C 4, the negative pole of electrochemical capacitor EC5, voltage stabilizing diode ZD2, the emitter of triode Q2 link to each other with the negative pole of control circuit, and the base stage of triode Q2 (A point) connects control signal; Described voltage dependent resistor (VDR) ZNR1, capacitor C 1 and resistance R 1 constitute the anti-surge of power supply and impact circuit; Described resistance R 1 constitutes the power supply current-limiting circuit with step-down current limiting capacitance C2; Described step-down current limiting capacitance C2 and resistance R 2 constitute the power supply reduction voltage circuit; Described rectifier bridge D1-D4 constitutes rectification circuit; Described voltage stabilizing diode ZD1, capacitor C 3, electrochemical capacitor EC1 and diode D5 constitute the relay coil feed circuit, and described resistance R 3, voltage stabilizing diode ZD2, electrochemical capacitor EC2, capacitor C 4 and electrochemical capacitor EC5 constitute the VCC of control circuit, and described relay J D1, triode Q1, triode Q2 and resistance R 4 constitute control relay circuits.The control circuit load is connected between ACL and the OUT.The control signal circuit is connected between VCC and the circuit negative pole.
The course of work of the utility model is following: when need of load is broken off; 2 place's electric currents of rectification circuit D1-D4 are through the base stage this moment Q1 conducting of R4 to Q1; Electric current is from the current collection base of Q1 to emitter after the very low adhesive that can not satisfy relay of voltage of relay coil (this moment); After the step-down of R3 current limliting, after EC5 filtering, obtain a stable VCC voltage through EC2 and C4 filtering through the voltage after the ZD2 voltage stabilizing.When need of load is connected; The base stage of Q2 (A point) input high level signal; Q2 conducting this moment drags down the high level of Q1 base stage and is directed at Q1 one-tenth cut-off state, and 2 place's electric currents of D1D4 flow through through the JD1 coil and form pressure drop through the voltage stabilizing of ZD1 voltage stabilizing diode after rectification this moment, and EC1, C3 filtering, D5 clamper make the JD1 voltage reach adhesive; Load conducting work; Electric current is through behind the JD1 coil, after the step-down of R3 current limliting, through EC5 filtering after obtains a stable VCC voltage through the voltage after the ZD2 voltage stabilizing through EC2 and C4 filtering.
Claims (3)
1. a resistance-capacitance depressurization control circuit comprises resistance R 1, resistance R 2, resistance R 3, resistance R 4, voltage dependent resistor (VDR) ZNR1, capacitor C 1, step-down current limiting capacitance C2, capacitor C 3, capacitor C 4, rectifier bridge D1-D4, voltage stabilizing diode ZD1, voltage stabilizing diode ZD2, electrochemical capacitor EC1, electrochemical capacitor EC2, electrochemical capacitor EC5, diode D5, triode Q1, triode Q2, relay J D1;
It is characterized in that: the end of power supply ACL, voltage dependent resistor (VDR) ZNR1, an end of capacitor C 1 link to each other with an end of resistance R 1; 3 places of the other end of the other end of power supply ACN, voltage dependent resistor (VDR) ZNR1, capacitor C 1, rectifier bridge D1-D4 link to each other with the IN of relay J D1 end; The end of the other end of resistance R 1, step-down current limiting capacitance C2 links to each other with an end of resistance R 2; The other end of step-down current limiting capacitance C2, the other end of resistance R 2 link to each other with 1 place of rectifier bridge D1-D4; 4 places of rectifier bridge D1-D4 link to each other with the negative pole of control circuit; The collector of the positive pole of the negative electrode of 2 places of rectifier bridge D1-D4, an end of relay J D1 coil, voltage stabilizing diode ZD1, an end of capacitor C 3, electrochemical capacitor EC1, the negative electrode of diode D5, triode Q1 links to each other with an end of resistance R 4; One end of the emitter of the anode of the negative pole of the other end of the anode of the other end of relay J D1 coil, voltage stabilizing diode ZD1, capacitor C 3, electrochemical capacitor EC1, diode D5, triode Q1, resistance R 3, the positive pole of electrochemical capacitor EC2 link to each other with an end of capacitor C 4; The positive pole of the other end of resistance R 3, electrochemical capacitor EC5 links to each other with voltage stabilizing diode ZD2 negative electrode; The other end of the base stage of triode Q1, resistance R 4 links to each other with the collector of triode Q2; The emitter of the anode of the negative pole of the other end of the negative pole of electrochemical capacitor EC2, capacitor C 4, electrochemical capacitor EC5, voltage stabilizing diode ZD2, triode Q2 links to each other with the negative pole of control circuit, and the base stage of triode Q2 connects control signal;
Described voltage dependent resistor (VDR) ZNR1, capacitor C 1 and resistance R 1 constitute the anti-surge of power supply and impact circuit; Described resistance R 1 constitutes the power supply current-limiting circuit with step-down current limiting capacitance C2; Described step-down current limiting capacitance C2 and resistance R 2 constitute the power supply reduction voltage circuit; Described rectifier bridge D1-D4 constitutes rectification circuit; Described voltage stabilizing diode ZD1, capacitor C 3, electrochemical capacitor EC1 and diode D5 constitute the relay coil feed circuit, and described resistance R 3, voltage stabilizing diode ZD2, electrochemical capacitor EC2, capacitor C 4 and electrochemical capacitor EC5 constitute the VCC of control circuit, and described relay J D1, triode Q1, triode Q2 and resistance R 4 constitute control relay circuits.
2. resistance-capacitance depressurization control circuit according to claim 1 is characterized in that, step-down current limiting capacitance C2 is high pressure resistant polarity free capacitor.
3. resistance-capacitance depressurization control circuit according to claim 1 and 2 is characterized in that, voltage stabilizing diode ZD1 adopts two or more voltage stabilizing diode series connection to replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204204705U CN202351726U (en) | 2011-10-28 | 2011-10-28 | Resistance and capacitance step-down control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204204705U CN202351726U (en) | 2011-10-28 | 2011-10-28 | Resistance and capacitance step-down control circuit |
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| Publication Number | Publication Date |
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| CN202351726U true CN202351726U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204204705U Expired - Lifetime CN202351726U (en) | 2011-10-28 | 2011-10-28 | Resistance and capacitance step-down control circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105640286A (en) * | 2016-04-14 | 2016-06-08 | 天津市畅悦电子科技有限公司 | Anti-reverse lifting and falling control circuit for smokeproof screen system |
| CN106783401A (en) * | 2016-12-30 | 2017-05-31 | 陆正平 | A kind of energy-saving resistance-capacitance depressurization relay drive circuit |
| CN110213857A (en) * | 2019-06-21 | 2019-09-06 | 惠州市莱特照明科技有限公司 | LED drive circuit |
| CN112468004A (en) * | 2019-09-09 | 2021-03-09 | 昆山新士坦电子科技有限公司 | Voltage stabilizing circuit and voltage stabilizing method |
-
2011
- 2011-10-28 CN CN2011204204705U patent/CN202351726U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105640286A (en) * | 2016-04-14 | 2016-06-08 | 天津市畅悦电子科技有限公司 | Anti-reverse lifting and falling control circuit for smokeproof screen system |
| CN106783401A (en) * | 2016-12-30 | 2017-05-31 | 陆正平 | A kind of energy-saving resistance-capacitance depressurization relay drive circuit |
| CN110213857A (en) * | 2019-06-21 | 2019-09-06 | 惠州市莱特照明科技有限公司 | LED drive circuit |
| CN112468004A (en) * | 2019-09-09 | 2021-03-09 | 昆山新士坦电子科技有限公司 | Voltage stabilizing circuit and voltage stabilizing method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120725 |