CN211044053U - Resistance-capacitance voltage reduction circuit and electronic equipment - Google Patents
Resistance-capacitance voltage reduction circuit and electronic equipment Download PDFInfo
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- CN211044053U CN211044053U CN202020017313.9U CN202020017313U CN211044053U CN 211044053 U CN211044053 U CN 211044053U CN 202020017313 U CN202020017313 U CN 202020017313U CN 211044053 U CN211044053 U CN 211044053U
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Abstract
The utility model provides a resistance-capacitance voltage reduction circuit and electronic equipment, the resistance-capacitance voltage reduction circuit comprises a signal input end, a rectification circuit and a switch circuit, the rectification circuit comprises a voltage stabilizing module, and the voltage stabilizing module comprises at least one voltage stabilizing diode; the controlled end of the switch circuit is connected with the signal input end, the input end of the switch circuit is connected with the first end of the voltage stabilizing module, and the output end of the switch circuit is connected with the second end of the voltage stabilizing module. The technical scheme of the utility model, can reduce resistance-capacitance voltage reduction circuit's consumption.
Description
Technical Field
The utility model relates to the field of electronic technology, in particular to resistance-capacitance voltage reduction circuit and electronic equipment.
Background
At present, many ovens in the market use a resistance-capacitance voltage reduction circuit to reduce the working voltage, i.e. the capacitance generated by a capacitor at a certain ac signal frequency is used to limit the maximum working current. In the resistance-capacitance voltage reduction circuit, a voltage regulator tube stabilizes the circuit at a certain working voltage, and a triode is adopted to drive a relay coil to be electrified so as to control the heating of a load.
However, when the relay coil is de-energized and the load stops heating, the current in the circuit still flows through the voltage regulator tube of the circuit, so that the voltage regulator tube continuously generates heat, and the power consumption of the electronic equipment is consumed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a resistance-capacitance voltage reduction circuit and electronic equipment aims at when relay coil cuts off the power supply, and voltage stabilizing module among the control circuit stops working to reduce electronic equipment's consumption.
In order to achieve the above object, the present invention provides a resistance-capacitance voltage-reducing circuit, which includes a signal input terminal, a rectifying circuit and a switching circuit, wherein the rectifying circuit includes a voltage-stabilizing module, and the voltage-stabilizing module includes at least one voltage-stabilizing diode;
the control signal output by the signal input end is used for controlling the load to work or stop working;
the controlled end of the switch circuit is connected with the signal input end, the input end of the switch circuit is connected with the first end of the voltage stabilizing module, and the output end of the switch circuit is connected with the second end of the voltage stabilizing module;
the switch circuit is used for receiving the control signal output by the signal input end;
when the control signal is used for controlling the load to stop working, the switch circuit is conducted according to the control signal so as to short-circuit a voltage stabilizing diode in the voltage stabilizing module.
Optionally, the rectifier circuit further includes a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, and a first voltage regulator diode;
the first end of the first resistor is connected with an alternating current live wire, the second end of the first resistor is connected with the first end of the first capacitor and the first end of the second resistor, and the second end of the second resistor is connected with the first end of the third resistor;
the second end of the first capacitor is connected with the anode of the first diode, the second end of the third resistor and the cathode of the second diode, and the anode of the second diode is connected with an alternating current zero line;
the negative electrode of the first diode is connected with the first end of the voltage stabilizing module, the input end of the switch circuit and the first end of the second capacitor; the second end of the second capacitor is connected with the second end of the voltage stabilizing module, the output end of the switch circuit, the cathode of the first voltage stabilizing diode and the first end of the third capacitor; the positive electrode of the first voltage stabilizing diode is connected with the alternating current zero line, and the second end of the third capacitor is connected with the system ground.
Optionally, the voltage regulation module includes a second voltage regulation diode and a third voltage regulation diode;
the anode of the second voltage-stabilizing diode is the second end of the voltage-stabilizing module, the cathode of the second voltage-stabilizing diode is connected with the anode of the third voltage-stabilizing diode, and the cathode of the third voltage-stabilizing diode is the first end of the voltage-stabilizing module.
Optionally, the switching circuit includes a first electron tube, a second electron tube, a fourth resistor, and a fifth resistor;
the first end of the first electronic tube is a controlled end of the switching circuit, the second end of the first electronic tube is connected with the system ground, and the third end of the first electronic tube is connected with the first end of the fifth resistor;
a second end of the fifth resistor is connected with a first end of the fourth resistor and a first end of the second valve, the second end of the second valve is an input end of the switching circuit, and the second end of the second valve is connected with a second end of the fourth resistor; and the third end of the second electron tube is the output end of the switch circuit.
Optionally, the first electron tube is an NPN triode;
the base electrode of the NPN triode is the first end of the first electron tube, the emitter electrode of the NPN triode is the second end of the first electron tube, and the collector electrode of the NPN triode is the third end of the first electron tube.
Optionally, the second electron tube is a PNP triode;
the base of PNP triode is the first end of second electron tube, the emitter of PNP triode is the second end of second electron tube, the collector of PNP triode is the third end of second electron tube.
Optionally, the resistance-capacitance voltage reduction circuit further includes a micro control unit, and an output end of the micro control unit is the signal input end.
Optionally, the resistance-capacitance voltage reduction circuit further comprises a relay and a wiring terminal;
a coil of the relay is connected with the voltage stabilizing module in parallel, a first end of a normally open contact of the relay is connected with a first end of the wiring terminal, and a second end of the normally open contact of the relay is connected with a second end of the wiring terminal;
the wiring terminal is used for connecting the load.
In order to achieve the above object, the present invention further provides an electronic device, which includes the rc step-down circuit as described above.
The technical scheme of the utility model, with the parallelly connected setting of voltage stabilizing module and switching circuit in the rectifier circuit, when the control signal of signal input part output is used for controlling load stop work, switching circuit switches on according to the control signal of signal input part output for voltage stabilizing module in the rectifier circuit is by the short circuit, thereby makes the zener diode stop work in the voltage stabilizing module, in order to reach the consumption that reduces electronic equipment, the purpose of energy saving.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a block diagram of an embodiment of the resistance-capacitance voltage reduction circuit of the present invention;
fig. 2 is a schematic circuit diagram of an embodiment of the resistance-capacitance voltage reduction circuit of the present invention;
fig. 3 is a schematic circuit diagram of another embodiment of the resistance-capacitance voltage-reducing circuit of the present invention.
The reference numbers illustrate:
| 10 | rectifying |
20 | |
| 30 | |
101 | Voltage stabilizing module |
| KA | Relay coil | KA-1 | Normally open contact of relay |
| R1～R5 | First to fifth resistors | D1 | First diode |
| C1～C3 | First to third capacitors | D2 | Second diode |
| L | AC live wire | N | AC zero line |
| T1 | First voltage regulator diode | T2 | Second voltage regulator diode |
| T3 | Third voltage regulator diode | Q1 | First electron tube |
| Q2 | Second electron tube | IN | Signal input terminal |
| J1 | Connecting terminal |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Fig. 1 is a block diagram of an embodiment of the resistance-capacitance voltage reduction circuit of the present invention.
The resistance-capacitance voltage reduction circuit comprises a signal input end IN, a rectifying circuit 10 and a switching circuit 20, wherein the rectifying circuit 10 comprises a voltage stabilizing module 101; the controlled terminal of the switch circuit 20 is connected to the signal input terminal IN, the input terminal of the switch circuit 20 is connected to the first terminal of the voltage stabilizing module 101, and the output terminal of the switch circuit 20 is connected to the second terminal of the voltage stabilizing module 20.
The rectifier circuit 10 is configured to convert ac power into dc power and supply power to each circuit module of the electronic device.
The switching circuit 20 has two states of on and off, and can be implemented by a circuit including various transistors, such as a transistor and an insulating field effect transistor.
In practical applications, the rectifying circuit 10 of the rc voltage-reducing circuit often includes a plurality of zener diodes, and each zener diode inside the rectifying circuit 10 is always in a continuous working state regardless of whether a relay in the circuit operates, that is, each zener diode inside the rectifying circuit 10 always has current flowing through, and each zener diode generates heat and consumes power. Based on this, according to the technical solution of this embodiment, a first end of the voltage stabilizing module 101 composed of one or more voltage stabilizing diodes among the plurality of voltage stabilizing diodes of the rectifying circuit 10 is connected to an input end of the switch circuit, a second end of the voltage stabilizing module 101 is connected to an output end of the switch circuit 20, which is equivalent to that the voltage stabilizing module 101 and the switch circuit 20 are arranged IN parallel, the switch circuit 20 is controlled to be turned on or off by the level of the control signal output by the signal input end IN, and the operating state of the voltage stabilizing module 101 is controlled by the turn-on or turn-off of the switch circuit 20. The number of the zener diodes in the voltage stabilizing module 101 may be one, two, or other number, and may be specifically set according to actual needs, which is not limited here. For example, if the rectifier circuit 10 includes three zener diodes, two of the zener diodes may be used as one zener module 101; alternatively, one of the zener diodes may be used as one of the zener modules 101.
In this embodiment, this resistance-capacitance voltage reduction circuit still includes relay and binding post J1, and wherein, relay coil KA and voltage stabilizing module 101 parallel arrangement, and the first end of normally open contact KA-1 and the first end of binding post J1 of relay are connected, and the second end of normally open contact KA-1 and the second end of binding post J1 of relay are connected. The relay has the following characteristics: when the switch circuit 20 is switched on, the relay coil KA is short-circuited, and the normally open contact KA-1 of the relay keeps a cut-off state; when the switch circuit 20 is cut off, the relay coil KA is electrified, and the normally open contact KA-1 of the relay is closed, so that the load connected with the connecting terminal J1 can work normally.
Specifically, when the signal input terminal IN inputs a low-level control signal to the controlled terminal of the switch circuit 20, the switch circuit 20 is controlled to be turned off. When the switching circuit 20 is turned off, the zener diode in the zener module 101 inside the rectifier circuit 10 is in a normal operating state. And certain pressure difference is formed at the two ends of the relay coil KA, the relay coil KA is electrified, the normally open contact KA-1 of the relay is closed, and the load connected with the wiring terminal J1 works normally. When the signal input terminal IN inputs a high-level control signal to the controlled terminal of the switch circuit 20, the switch circuit 20 is controlled to be turned on. When the switching circuit 20 is turned on, the zener diodes in the zener module 101 are short-circuited, and no current flows through each zener diode inside the zener module 101, so that each zener diode inside the zener module 101 stops generating heat, thereby reducing the power consumption of the electronic device and saving electric energy. Meanwhile, the relay coil KA is short-circuited, the relay coil KA is not electrified, the normally open contact KA-1 of the relay is in a cut-off state, and a load connected with the wiring terminal J1 stops working. It can be understood that, in the present embodiment, when the relay stops operating, a part of the zener diodes inside the rectifying circuit 10 is short-circuited, instead of all the zener diodes inside the rectifying circuit 10 being short-circuited, so as to supply power to components such as a micro control unit of the electronic device through the operation of other zener diodes, so as to ensure that the electronic device can be started normally.
According to the technical scheme of the embodiment, the voltage stabilizing module 101 IN the rectifying circuit 10 is connected IN parallel with the switch circuit 20, when the control signal output by the signal input end IN is used for controlling the load to stop working, the switch circuit 20 is conducted according to the control signal output by the signal input end IN, so that the voltage stabilizing module 101 IN the rectifying circuit 10 is short-circuited, the voltage stabilizing diode IN the voltage stabilizing module 101 stops working, and the purposes of reducing the power consumption of electronic equipment and saving energy are achieved.
Optionally, referring to fig. 2, in an embodiment, the rectifier circuit 10 further includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first diode D1, a second diode D2, and a first zener diode T1.
The first end of the first resistor R1 is connected with an alternating current live wire L, the second end of the first resistor R1 is connected with the first end of a first capacitor C1 and the first end of a second resistor R2, the second end of the second resistor R2 is connected with the first end of a third resistor R3, the second end of the first capacitor C1 is connected with the anode of a first diode D1, the second end of a third resistor R3 and the cathode of a second diode D2, the anode of the second diode D2 is connected with an alternating current zero line N, the cathode of the first diode D1 is connected with the first end of the voltage stabilizing module 101, the input end of the switch circuit 20 and the first end of the second capacitor C2, the second end of the second capacitor C2 is connected with the second end of the voltage stabilizing module 101, the output end of the switch circuit 20, the cathode of the first voltage stabilizing diode T1 and the first end of the third capacitor C3, and the anode of the first end of the first voltage stabilizing diode T1 is connected with the alternating current zero line C732 and the second end of the third capacitor C3.
In this embodiment, this resistance-capacitance voltage reduction circuit still includes relay and binding post J1, and wherein, relay coil KA and voltage stabilizing module 101 parallel arrangement, and the first end of normally open contact KA-1 and the first end of binding post J1 of relay are connected, and the second end of normally open contact KA-1 and the second end of binding post J1 of relay are connected. The relay has the following characteristics: when the switch circuit 20 is switched on, the relay coil KA is short-circuited, and the normally open contact KA-1 of the relay keeps a cut-off state, so that the load connected with the connecting terminal J1 stops working; when the switch circuit 20 is cut off, the relay coil KA is electrified, and the normally open contact KA-1 of the relay is closed, so that the load connected with the connecting terminal J1 can work normally.
When the switch circuit is cut off, a positive alternating current signal flows to an alternating current zero line N through an alternating current live wire L, a first resistor R1, a first capacitor C1, a first diode D1, a voltage stabilizing module 101 and a first voltage stabilizing diode T1, and a negative alternating current signal flows to an alternating current live wire L through the alternating current zero line N, a second diode D2 and a first capacitor C1, a certain voltage difference is formed at two ends of a relay coil KA, the relay coil KA is electrified, a normally open contact KA-1 of the relay is closed, and a load connected with a connecting terminal J1 works normally.
When the relay IN the circuit needs to stop working, a high-level control signal is input at a signal input end IN to control the switch circuit 20 to be conducted, when the switch circuit 20 is conducted, the voltage stabilizing diode IN the voltage stabilizing module 101 is short-circuited, the relay coil KA is not electrified, the normally open contact KA-1 of the relay is IN a cut-off state, and the load connected with the wiring terminal J1 stops working.
The second resistor R2 and the third resistor R3 form a discharge circuit of the first capacitor C1, and the first diode D1 and the second diode D2 perform rectification; the second capacitor C2 and the third capacitor C3 are polar capacitors and have a filtering function, so that the rectified direct current signal is smoother.
Optionally, the voltage regulation module 101 includes a second voltage regulation diode T2 and a third voltage regulation diode T3; the anode of the second zener diode T2 is the second terminal of the zener module 101, the cathode of the second zener diode T2 is connected to the anode of the third zener diode T3, and the cathode of the third zener diode T3 is the first terminal of the zener module 101.
Alternatively, referring to fig. 2, the switching circuit 20 includes a first lamp Q1, a second lamp Q2, a fourth resistor R4, and a fifth resistor R5; a first terminal of the first lamp Q1 is a controlled terminal of the switching circuit 20, a second terminal of the first lamp Q1 is connected to the system ground, and a third terminal of the first lamp Q1 is connected to a first terminal of a fifth resistor R5; a second end of the fifth resistor R5 is connected to a first end of the fourth resistor R4 and a first end of the second tube Q2, a second end of the second tube Q2 is an input end of the switch circuit 20, and a second end of the second tube Q2 is connected to a second end of the fourth resistor R4; the third terminal of the second tube Q2 is the output terminal of the switch circuit 20.
In this embodiment, this resistance-capacitance voltage reduction circuit still includes relay and binding post J1, and wherein, relay coil KA and voltage stabilizing module 101 parallel arrangement, and the first end of normally open contact KA-1 and the first end of binding post J1 of relay are connected, and the second end of normally open contact KA-1 and the second end of binding post J1 of relay are connected. The relay has the following characteristics: when the switch circuit 20 is switched on, the relay coil KA is short-circuited, and the normally open contact KA-1 of the relay keeps a cut-off state; when the switch circuit 20 is cut off, the relay coil KA is electrified, and the normally open contact KA-1 of the relay is closed, so that the load connected with the connecting terminal J1 can work normally.
The first electronic tube Q1 is an NPN triode; the base of the NPN triode is the first end of the first electron tube Q1, the emitter of the NPN triode is the second end of the first electron tube Q1, and the collector of the NPN triode is the third end of the first electron tube Q1.
The second electronic tube Q2 is a PNP triode; and the base electrode of the PNP triode is the first end of the second electron tube Q2, the emitter electrode of the PNP triode is the second end of the second electron tube Q2, and the collector electrode of the PNP triode is the third end of the second electron tube Q2.
The specific operating principle of the switching circuit 20 is as follows:
when the signal input terminal IN inputs the control signal of the high level, the first electronic tube Q1 is turned on. When the first lamp Q1 is turned on, the level of the controlled terminal of the second lamp Q2 is pulled low, and the second lamp Q2 is also turned on, so that the regulator block 101 and the relay coil KA of the rectifier circuit 10 are both short-circuited, the regulator diode in the regulator block 101 stops generating heat to reduce the power consumption of the circuit, and the relay also stops operating.
When the signal input terminal IN receives the control signal of the low level, the first transistor Q1 is turned off. When the first electronic tube Q1 is cut off, the fourth resistor R4 pulls up the level of the first end of the second electronic tube Q2 to a high level, the second electronic tube Q2 is also cut off, the voltage stabilizing module 101 and the relay coil KA of the rectifying circuit 10 are not short-circuited any more, the voltage stabilizing module 101 recovers to a normal working state, a certain voltage difference is formed at two ends of the relay coil KA, the relay coil KA is electrified, the normally open contact KA-1 of the relay is closed, and the load connected with the connecting terminal J1 works normally.
Optionally, referring to fig. 3, IN an embodiment, the rc voltage-reducing circuit further includes a micro-control unit 30, and an output terminal of the micro-control unit 30 is the signal input terminal IN.
The micro control unit 30 may be a microprocessor such as a single chip, a DSP, or an FPGA, and the output end of the micro control unit 30 is a signal input end IN, that is, one of the IO ports of the micro control unit 30 is used as the signal input end IN, and the micro control unit controls the on/off of the switch circuit 20 by controlling the level of the IO port.
Optionally, referring to fig. 3, in an embodiment, the rc voltage-reducing circuit further includes a relay and a connection terminal J1; the coil KA of the relay is connected with the voltage stabilizing module 101 in parallel, the first end of the normally open contact KA-1 of the relay is connected with the first end 1 of the wiring terminal J1, and the second end of the normally open contact KA-1 of the relay is connected with the second end 2 of the wiring terminal J1.
When the signal input terminal IN receives a low-level control signal, the switching circuit 20 is turned off. When the switch circuit 20 is turned off, a certain pressure difference is formed between two ends of the coil KA of the relay, and the coil KA of the relay is electrified. The coil KA of the relay is electrified, and the normally open contact KA-1 of the relay is triggered to be closed, so that the wiring terminal J1 can work normally. When the signal input terminal IN receives a high-level control signal, the switching circuit 20 is turned on. When the switch circuit 20 is switched on, the coil KA of the relay is short-circuited, the coil KA of the relay is not electrified, and the normally open contact KA-1 of the relay maintains a disconnected state. It can be understood that, because the coil KA of the relay is arranged in parallel with the voltage stabilizing module 101, the on or off of the switch circuit 20 also controls whether the relay is operated, that is, when the switch circuit 20 is on, the relay is short-circuited, the relay stops working, and when the switch circuit 20 is off, the relay normally works.
To better illustrate the idea of the present invention, the following specific circuit principle of the present invention is explained with reference to fig. 3:
when the micro control unit 30 outputs a low-level control signal to the first electronic tube Q1, the first electronic tube Q1 is turned off, when the first electronic tube Q1 is turned off, the fourth resistor R4 pulls up the level of the first end of the second electronic tube Q2 to a high level, and the second electronic tube Q2 is also turned off, at this time, a positive alternating current signal flows to the alternating current neutral line N through the alternating current live wire L, the first resistor R1, the first capacitor C1, the first diode D1, the voltage stabilizing module 101, and the first voltage stabilizing diode T1, and a negative alternating current signal flows to the alternating current live wire L through the alternating current neutral line N, the second diode D2, and the first capacitor C1, and a certain voltage difference is formed at two ends of the coil KA of the relay, and the relay coil KA is electrified, so that the normally-open contact-1 of the relay is triggered to be closed, and the connection terminal J1 can normally work.
When the micro control unit outputs a high-level control signal to the first electronic tube Q1, the first electronic tube Q1 is turned on, when the first electronic tube Q1 is turned on, the level of the controlled terminal of the second electronic tube Q2 is pulled low, and the second electronic tube Q2 is also turned on, at this time, a forward ac signal flows to the ac neutral line n through the ac live wire L, the first resistor R1, the first capacitor C1, the first diode D1, the switching circuit 20, and the first zener diode T1, and the first zener diode T1 stabilizes the voltage at its both ends at its regulated value, for example, 5V, to provide a standby voltage for the micro control unit 30, while the zener module 101 and the coil KA of the relay are short-circuited, the zener diode and the coil KA of the zener module 101 do not flow current, and the connection terminal J1 stops working.
The utility model also provides an electronic equipment, this electronic equipment include as above resistance-capacitance voltage reduction circuit. The detailed structure of the rc voltage-reducing circuit can refer to the above embodiments, and is not described herein again; it can be understood that, because the utility model discloses an above-mentioned resistance-capacitance voltage reduction circuit has been used among the electronic equipment, consequently, the utility model discloses electronic equipment's embodiment includes the whole technical scheme of the whole embodiments of above-mentioned resistance-capacitance voltage reduction circuit, and the technological effect that reaches is also identical, no longer gives unnecessary details here. The electronic device may be an oven, or may be other electronic devices, and is not limited herein.
The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (9)
1. A resistance-capacitance voltage reduction circuit is characterized by comprising a signal input end, a rectifying circuit and a switching circuit, wherein the rectifying circuit comprises a voltage stabilizing module, and the voltage stabilizing module comprises at least one voltage stabilizing diode;
the control signal output by the signal input end is used for controlling the load to work or stop working;
the controlled end of the switch circuit is connected with the signal input end, the input end of the switch circuit is connected with the first end of the voltage stabilizing module, and the output end of the switch circuit is connected with the second end of the voltage stabilizing module;
the switch circuit is used for receiving the control signal output by the signal input end;
when the control signal is used for controlling the load to stop working, the switch circuit is conducted according to the control signal so as to short-circuit a voltage stabilizing diode in the voltage stabilizing module.
2. The resistor-capacitor voltage reducing circuit of claim 1, wherein the rectifying circuit further comprises a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, and a first zener diode;
the first end of the first resistor is connected with an alternating current live wire, the second end of the first resistor is connected with the first end of the first capacitor and the first end of the second resistor, and the second end of the second resistor is connected with the first end of the third resistor;
the second end of the first capacitor is connected with the anode of the first diode, the second end of the third resistor and the cathode of the second diode, and the anode of the second diode is connected with an alternating current zero line;
the negative electrode of the first diode is connected with the first end of the voltage stabilizing module, the input end of the switch circuit and the first end of the second capacitor; the second end of the second capacitor is connected with the second end of the voltage stabilizing module, the output end of the switch circuit, the cathode of the first voltage stabilizing diode and the first end of the third capacitor; the positive electrode of the first voltage stabilizing diode is connected with the alternating current zero line, and the second end of the third capacitor is connected with the system ground.
3. The rc buck circuit of claim 1, wherein the regulator module includes a second zener diode and a third zener diode;
the anode of the second voltage-stabilizing diode is the second end of the voltage-stabilizing module, the cathode of the second voltage-stabilizing diode is connected with the anode of the third voltage-stabilizing diode, and the cathode of the third voltage-stabilizing diode is the first end of the voltage-stabilizing module.
4. The rc-step down circuit of claim 1, wherein the switching circuit comprises a first tube, a second tube, a fourth resistor, and a fifth resistor;
the first end of the first electronic tube is a controlled end of the switching circuit, the second end of the first electronic tube is connected with the system ground, and the third end of the first electronic tube is connected with the first end of the fifth resistor;
a second end of the fifth resistor is connected with a first end of the fourth resistor and a first end of the second valve, the second end of the second valve is an input end of the switching circuit, and the second end of the second valve is connected with a second end of the fourth resistor; and the third end of the second electron tube is the output end of the switch circuit.
5. The RC step-down circuit of claim 4, wherein the first electronic tube is an NPN transistor;
the base electrode of the NPN triode is the first end of the first electron tube, the emitter electrode of the NPN triode is the second end of the first electron tube, and the collector electrode of the NPN triode is the third end of the first electron tube.
6. The rc buck circuit of claim 4, wherein the second electronic tube is a PNP transistor;
the base of PNP triode is the first end of second electron tube, the emitter of PNP triode is the second end of second electron tube, the collector of PNP triode is the third end of second electron tube.
7. The rc-buck circuit of claim 1, wherein the rc-buck circuit further comprises a micro-control unit, an output of the micro-control unit being the signal input.
8. The rc buck circuit of claim 1, wherein the rc buck circuit further comprises a relay and a terminal;
a coil of the relay is connected with the voltage stabilizing module in parallel, a first end of a normally open contact of the relay is connected with a first end of the wiring terminal, and a second end of the normally open contact of the relay is connected with a second end of the wiring terminal;
the wiring terminal is used for connecting the load.
9. An electronic device, characterized in that the electronic device comprises a resistor-capacitor voltage step-down circuit according to any of claims 1-8.
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| CN202020017313.9U CN211044053U (en) | 2020-01-03 | 2020-01-03 | Resistance-capacitance voltage reduction circuit and electronic equipment |
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| CN202020017313.9U CN211044053U (en) | 2020-01-03 | 2020-01-03 | Resistance-capacitance voltage reduction circuit and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113473679A (en) * | 2021-06-30 | 2021-10-01 | 欧普照明股份有限公司 | Circuit and lighting device |
| WO2022134239A1 (en) * | 2020-12-25 | 2022-06-30 | 宁波海贝电器有限公司 | Wide-voltage alternating current circuit suitable for high-power switch |
-
2020
- 2020-01-03 CN CN202020017313.9U patent/CN211044053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022134239A1 (en) * | 2020-12-25 | 2022-06-30 | 宁波海贝电器有限公司 | Wide-voltage alternating current circuit suitable for high-power switch |
| CN113473679A (en) * | 2021-06-30 | 2021-10-01 | 欧普照明股份有限公司 | Circuit and lighting device |
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