CN215300520U - Low-cost standby circuit - Google Patents
Low-cost standby circuit Download PDFInfo
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- CN215300520U CN215300520U CN202121236917.3U CN202121236917U CN215300520U CN 215300520 U CN215300520 U CN 215300520U CN 202121236917 U CN202121236917 U CN 202121236917U CN 215300520 U CN215300520 U CN 215300520U
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- resistor
- diode
- capacitor
- circuit
- standby
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model relates to an electrical equipment field, aim at provides a low-cost standby circuit with advantages such as the consumption is lower, the circuit is simple, the reliability is high, price/performance ratio is high. The technical scheme is as follows: a low-cost standby circuit comprises a rectifying circuit, a standby control circuit and a shutdown control circuit, wherein the output end of the rectifying circuit is respectively connected with the power supply end of the standby circuit and the power supply end of the standby control circuit; the standby circuit comprises a relay, a resistor R1 and a triode Q4, one end of the resistor R1 is connected with the output end of the rectifying circuit, two ends of the resistor R1 are connected with three pins of the relay, four pins of the relay are connected with a collector of the triode Q4, a base of the triode Q4 is a control end of the standby circuit, and an emitter of the triode Q4 is grounded.
Description
Technical Field
The utility model relates to an electrical equipment field, concretely relates to low-cost standby circuit.
Background
At present, with the popularization of household appliances and audio-visual products, the wide application of office automation and the continuous development of networking are realized, the products greatly facilitate the life of people, and simultaneously, a large amount of energy is wasted, more and more products are used for saving energy, so that the electric appliances have a standby function, and further the loss of the appliances is reduced.
When the current standby circuit is in a standby state, the power consumption of the standby circuit is relatively high, and the circuit structure is relatively complex, so that the standby circuit has high operation and maintenance cost.
Disclosure of Invention
An object of the utility model is to provide a low-cost standby circuit has advantages such as the consumption is lower, the circuit is simple, the reliability is high, price/performance ratio is high.
In order to realize the purpose of the utility model, the utility model adopts the technical proposal that: a low-cost standby circuit comprises a rectifying circuit, a standby control circuit and a shutdown control circuit, wherein the output end of the rectifying circuit is respectively connected with the power supply end of the standby circuit and the power supply end of the standby control circuit;
the standby circuit comprises a relay, a resistor R1 and a triode Q4, one end of the resistor R1 is connected with the output end of the rectifying circuit, two ends of the resistor R1 are connected with three pins of the relay, four pins of the relay are connected with a collector of the triode Q4, a base of the triode Q4 is a control end of the standby circuit, and an emitter of the triode Q4 is grounded.
Preferably, the standby circuit further comprises a capacitor C2, a diode D2 and a diode D7, three pins of the relay are respectively connected with the cathode of the diode D7 and the anode of the capacitor C2, the anode of the diode D7 is connected with the cathode of the diode D2, and the anode of the diode D2 and the cathode of the capacitor C2 are both connected with four pins of the relay.
Preferably, the rectifier circuit includes a switch SW1, a diode D1, a diode D8, a capacitor C12, and a capacitor C13, one pin of the switch SW1 is a power input end, two pins of the switch SW1 are respectively connected to one pin of the relay, the anode of the diode D8, and the anode of the diode D1, the cathode of the diode D1 is respectively connected to one pin of the resistor R1 and the anode of the capacitor C13, the cathode of the diode D8 is respectively connected to the anode of the capacitor C12 and the power supply end of the standby control circuit, and the cathode of the capacitor C12 and the cathode of the capacitor C13 are both grounded.
Preferably, the standby control circuit includes a transistor Q7, a capacitor C1, a capacitor C3, a capacitor C5, a resistor R24, a resistor R26, a resistor R3, a resistor R4, a resistor R7, a resistor R6, a resistor R5, and a diode D3;
the collector of the triode Q7 is respectively connected with the cathode of a diode D8 and the anode of a capacitor C1, the base of the triode Q7 is connected with one pin of a resistor R24, two pins of the resistor R24 are respectively connected with one pin of a resistor R7, the cathode of the diode D3 and the anode of the capacitor C5, and the anode of the diode D3 is connected with two pins of a relay;
an emitter of the triode Q7 is connected with one pin of a resistor R26, two pins of the resistor R26 are respectively connected with one pin of a resistor R3 and a negative electrode of a capacitor C1, two pins of the resistor R3 are connected with one pin of a resistor R4, two pins of the resistor R4 are respectively connected with a base of the triode Q4, one pin of a capacitor C3, one pin of the resistor R5 and one pin of the resistor R6, and two pins of the resistor R6 are connected with two pins of a resistor R7;
two pins of the resistor R5, two pins of the capacitor C3 and the negative electrode of the capacitor C5 are all grounded.
Preferably, the shutdown control circuit adopts an optical coupler chip, the input end of the control side of the optical coupler chip is connected with the base of the triode Q4, and the output end of the control side of the optical coupler chip is grounded.
Preferably, a fuse FU is connected in series to a common line of the switch SW1, the diode D8 and the diode D1.
The beneficial effects of the utility model are concentrated and are embodied in:
1. the standby circuit of the utility model controls the current of the circuit under the current limiting effect of the resistor R1, so that the voltage at the two ends of the relay can be greatly reduced, the power consumption is about 0.3W, and the power consumption is lower;
2. the utility model is composed of four parts of a rectification circuit, a standby control circuit and a shutdown control circuit, and has simple circuit structure and high cost performance; the high-cost-performance signal-free input standby function required by a user can be realized at extremely low cost.
Drawings
FIG. 1 is a block diagram of the overall circuit of the present invention;
fig. 2 is a schematic circuit diagram of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, a low-cost standby circuit includes a rectifying circuit, a standby control circuit and a shutdown control circuit, wherein the output terminal of the rectifying circuit is connected to the power terminal of the standby circuit and the power terminal of the standby control circuit respectively, and the output terminal of the standby control circuit and the output terminal of the shutdown control circuit are connected to the control terminal of the standby circuit; the power input socket is connected with 220V alternating current, and the input end of the rectifying circuit and the load power supply of the standby circuit are connected with the power input socket;
the standby circuit comprises a relay, a resistor R1 and a triode Q4, one end of the resistor R1 is connected with the output end of the rectifying circuit, two ends of the resistor R1 are connected with three pins of the relay, four pins of the relay are connected with a collector of the triode Q4, a base of the triode Q4 is a control end of the standby circuit, and an emitter of the triode Q4 is grounded; in the relay in the embodiment, a normally open contact switch is adopted, one end of the normally open contact switch is connected with the anode of an input power supply, and the other end of the normally open contact switch is connected with a load; after the standby circuit is connected with the control power supply, the relay is electrified, and the normally open contact switch is closed, so that the standby state is realized; the resistor R1 plays a role in limiting current, so that the voltage at two ends of the relay can be greatly reduced, and the power consumption of the relay is reduced to about 0.3W.
Further, the standby circuit further comprises a capacitor C2, a diode D2 and a diode D7, three pins of the relay are respectively connected with a negative electrode of the diode D7 and a positive electrode of the capacitor C2, a positive electrode of the diode D7 is connected with a negative electrode of the diode D2, a positive electrode of the diode D2 and a negative electrode of the capacitor C2 are both connected with four pins of the relay, and the capacitor C2, the diode D2 and the diode D7 play roles in voltage stabilization and filtering, so that the relay works more stably.
Further, the rectifier circuit comprises a switch SW1, a diode D1, a diode D8, a capacitor C12 and a capacitor C13, wherein one pin of the switch SW1 is a power input end, two pins of the switch SW1 are respectively connected with one pin of a relay, the anode of the diode D8 and the anode of the diode D1, the cathode of the diode D1 is respectively connected with one pin of the resistor R1 and the anode of the capacitor C13, the cathode of the diode D8 is respectively connected with the anode of the capacitor C12 and the power supply end of the standby control circuit, and the cathode of the capacitor C12 and the cathode of the capacitor C13 are both grounded; in the embodiment, one pin of the switch SW1 is connected to the power input socket, and the power is connected to the filter circuit; the switch SW1 divides the input AC220V voltage into two paths, one path is rectified by a diode D1 and a diode D8, and the direct-current voltage is output; the other path is connected with a normally open contact switch of the relay, namely, connected with one pin of the relay. The diode D1 and the diode D8 respectively output two paths of direct-current voltages, one path of direct-current voltage is provided for the standby control circuit, the other path of direct-current voltage is provided for the standby circuit, and the two paths of direct-current voltage are independently rectified, so that the reliability of the standby circuit and the standby control circuit is improved; the capacitor C12 and the capacitor C13 play a role in filtering the rectified output end, so that the subsequent circuit is more stable in operation.
In order to improve the safety of the operation of the rectification circuit, the standby circuit and the standby control circuit, a fuse FU may be connected in series to a common line of the switch SW1, the diode D8 and the diode D1.
Further, the standby control circuit comprises a triode Q7, a capacitor C1, a capacitor C3, a capacitor C5, a resistor R24, a resistor R26, a resistor R3, a resistor R4, a resistor R7, a resistor R6, a resistor R5, and a diode D3;
the collector of the triode Q7 is respectively connected with the cathode of a diode D8 and the anode of a capacitor C1, the base of the triode Q7 is connected with one pin of a resistor R24, two pins of the resistor R24 are respectively connected with one pin of a resistor R7, the cathode of the diode D3 and the anode of the capacitor C5, and the anode of the diode D3 is connected with two pins of a relay;
an emitter of the triode Q7 is connected with one pin of a resistor R26, two pins of the resistor R26 are respectively connected with one pin of a resistor R3 and a negative electrode of a capacitor C1, two pins of the resistor R3 are connected with one pin of a resistor R4, two pins of the resistor R4 are respectively connected with a base of the triode Q4, one pin of a capacitor C3, one pin of the resistor R5 and one pin of the resistor R6, and two pins of the resistor R6 are connected with two pins of a resistor R7;
two pins of the resistor R5, two pins of the capacitor C3 and the negative electrode of the capacitor C5 are all grounded.
Further, the shutdown control circuit adopts an optical coupler chip, the input end of the control side of the optical coupler chip is connected with the base of a triode Q4, and the output end of the control side of the optical coupler chip is grounded.
In this embodiment, the above-mentioned ground is connected to the zero line of the AC220V electric wire, when the utility model is in operation, after the switch SW1 is closed, the capacitor C1 starts to charge continuously and maintains about 1S, in this 1S period, the base of the triode Q4 is provided with the bias conducting voltage through the resistor R3 and the resistor R4, at this time, the triode Q4 is conducted, the relay is powered on, the normally open contact switch attracts to be closed after the relay is connected, and the other end of the normally open contact switch is connected to the load; because the diode D3 is turned on at this time, the cathode terminal of the diode D3 provides bias conduction voltage for the base electrode of the triode Q7, the triode Q7 is turned on, and the capacitor C1 starts to discharge and is in a zero charge state; under the action of the resistor R6 and the resistor R7, the transistor Q4 can be continuously conducted; the whole standby circuit is kept in a standby state, and then the load is powered on to start operation.
When the load needs to stop working, the optocoupler chip is controlled, at the moment, the base electrode of the triode Q4 is equivalent to a grounding state, the triode Q4 is in a cut-off state, the relay is disconnected, the load disconnects the power supply, and the working is stopped; when load start up is required, switch SW1 is re-opened.
It should be noted that, for simplicity of description, the above-mentioned embodiments of the method are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the order of acts described, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and elements referred to are not necessarily required in this application.
Claims (6)
1. A low cost standby circuit, comprising: the power supply system comprises a rectifying circuit, a standby control circuit and a shutdown control circuit, wherein the output end of the rectifying circuit is respectively connected with the power supply end of the standby circuit and the power supply end of the standby control circuit, and the output end of the standby control circuit and the output end of the shutdown control circuit are connected with the control end of the standby circuit;
the standby circuit comprises a relay, a resistor R1 and a triode Q4, one end of the resistor R1 is connected with the output end of the rectifying circuit, two ends of the resistor R1 are connected with three pins of the relay, four pins of the relay are connected with a collector of the triode Q4, a base of the triode Q4 is a control end of the standby circuit, and an emitter of the triode Q4 is grounded.
2. A low cost standby circuit according to claim 1, wherein: the standby circuit further comprises a capacitor C2, a diode D2 and a diode D7, wherein three pins of the relay are respectively connected with the cathode of the diode D7 and the anode of the capacitor C2, the anode of the diode D7 is connected with the cathode of the diode D2, and the anode of the diode D2 and the cathode of the capacitor C2 are connected with four pins of the relay.
3. A low cost standby circuit according to claim 1, wherein: the rectifying circuit comprises a switch SW1, a diode D1, a diode D8, a capacitor C12 and a capacitor C13, wherein one pin of the switch SW1 is a power input end, two pins of the switch SW1 are respectively connected with one pin of a relay, the anode of the diode D8 and the anode of the diode D1, the cathode of the diode D1 is respectively connected with one pin of a resistor R1 and the anode of the capacitor C13, the cathode of the diode D8 is respectively connected with the anode of the capacitor C12 and a power supply end of a standby control circuit, and the cathode of the capacitor C12 and the cathode of the capacitor C13 are both grounded.
4. A low cost standby circuit according to claim 3, wherein: the standby control circuit comprises a triode Q7, a capacitor C1, a capacitor C3, a capacitor C5, a resistor R24, a resistor R26, a resistor R3, a resistor R4, a resistor R7, a resistor R6, a resistor R5 and a diode D3;
the collector of the triode Q7 is respectively connected with the cathode of a diode D8 and the anode of a capacitor C1, the base of the triode Q7 is connected with one pin of a resistor R24, two pins of the resistor R24 are respectively connected with one pin of a resistor R7, the cathode of the diode D3 and the anode of the capacitor C5, and the anode of the diode D3 is connected with two pins of a relay;
an emitter of the triode Q7 is connected with one pin of a resistor R26, two pins of the resistor R26 are respectively connected with one pin of a resistor R3 and a negative electrode of a capacitor C1, two pins of the resistor R3 are connected with one pin of a resistor R4, two pins of the resistor R4 are respectively connected with a base of the triode Q4, one pin of a capacitor C3, one pin of the resistor R5 and one pin of the resistor R6, and two pins of the resistor R6 are connected with two pins of a resistor R7;
two pins of the resistor R5, two pins of the capacitor C3 and the negative electrode of the capacitor C5 are all grounded.
5. A low cost standby circuit according to claim 4, wherein: the shutdown control circuit adopts an optical coupler chip, the input end of the control side of the optical coupler chip is connected with the base of a triode Q4, and the output end of the control side of the optical coupler chip is grounded.
6. A low cost standby circuit according to claim 4, wherein: the fuse FU is connected in series on a common line of the switch SW1, the diode D8 and the diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121236917.3U CN215300520U (en) | 2021-06-03 | 2021-06-03 | Low-cost standby circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121236917.3U CN215300520U (en) | 2021-06-03 | 2021-06-03 | Low-cost standby circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215300520U true CN215300520U (en) | 2021-12-24 |
Family
ID=79514095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121236917.3U Expired - Fee Related CN215300520U (en) | 2021-06-03 | 2021-06-03 | Low-cost standby circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215300520U (en) |
-
2021
- 2021-06-03 CN CN202121236917.3U patent/CN215300520U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211224 |