CN203896188U - Intermittent power supply control circuit of switching-mode power supply - Google Patents
Intermittent power supply control circuit of switching-mode power supply Download PDFInfo
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- CN203896188U CN203896188U CN201420191932.4U CN201420191932U CN203896188U CN 203896188 U CN203896188 U CN 203896188U CN 201420191932 U CN201420191932 U CN 201420191932U CN 203896188 U CN203896188 U CN 203896188U
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Abstract
The utility model provides an intermittent power supply control circuit of a switching-mode power supply. The intermittent power supply control circuit comprises a protection circuit, a step-down circuit, a rectification filter circuit, a time-delay control circuit and a switching control circuit. The output end of the protection circuit is connected with the step-down circuit. The output end of the step-down circuit is connected with the rectification filter circuit. The output end of the rectification filter circuit is connected with the time-delay control circuit. The output end of the time-delay control circuit is connected with the switching control circuit. The time-delay control circuit comprises a voltage-stabilizer tube DW1, a voltage-stabilizer tube DW2, a relay KM1, a capacitor C3, a resistor R2 and a resistor R3. The switching control circuit comprises a multiple valve composed of a triode Q1 and a triode Q2. The intermittent power supply control circuit has a simple structure and can save energy.
Description
Technical field
The utility model relates to power-supply system field, particularly a kind of intermittent power-supplying circuit of Switching Power Supply.
Background technology
The application of Switching Power Supply in power electronic equipment is very extensive; in some occasions; the fitful wind control of the aerating machine of for example fish jar and electric fan; need to carry out periodic break-make control to power supply; adopt the artificial method of cutting off and connect to realize to the break-make control of power supply at present, Switching Power Supply can not be carried out break-make control automatically, usually can cause people to open after Switching Power Supply; forget and close, be unfavorable for energy-conservation.
Utility model content
The utility model is for the technical problem of above-mentioned existence, propose a kind of intermittent power-supplying circuit of Switching Power Supply, solved because Switching Power Supply can not realize intermittent work, needed people to carry out turning on and off of power supply, complicated operation, open be for a long time unfavorable for energy-conservation.
The technical solution of the utility model is: a kind of intermittent power-supplying circuit of Switching Power Supply, comprise: protective circuit, reduction voltage circuit, current rectifying and wave filtering circuit, delay control circuit and ON-OFF control circuit, the output of described protective circuit connects described reduction voltage circuit, the output of described reduction voltage circuit connects described current rectifying and wave filtering circuit, the output of described current rectifying and wave filtering circuit connects described delay control circuit, the output of described delay control circuit connects described ON-OFF control circuit, described delay control circuit comprises voltage-stabiliser tube DW1, voltage-stabiliser tube DW2, relay K M1, capacitor C 3, resistance R 2 and resistance R 3, described voltage-stabiliser tube DW1 is connected in parallel on the output of described current rectifying and wave filtering circuit, described relay K M1 input node 1 connects described resistance R 3, the output of the normally closed node 2 of described relay connects described capacitor C 3, described relay often open the anode that node 3 connects described voltage-stabiliser tube DW2, the negative electrode of described voltage-stabiliser tube DW2 is connected with the normally closed node 2 of described relay.
Further, described ON-OFF control circuit comprises the multiple tube being made up of triode Q1 and triode Q2, the base stage of described multiple tube is the anodic bonding with voltage-stabiliser tube DW2 by described resistance R 3, the collector electrode of described multiple tube connects the output node 4 of described relay, and the output node 5 of described relay is connected with power consumption equipment.
Further, described protective circuit is protective tube F, and described protective tube F is arranged on live wire input.
Further, described reduction voltage circuit is the capacitance-resistance voltage reduction circuit that resistance R 1 and capacitor C 1 compose in parallel.
Further, described current rectifying and wave filtering circuit adopts rectifier bridge and filter capacitor C2.
The beneficial effects of the utility model: the utility model adopts the delay control switch of relay, electric capacity and resistance composition, circuit structure is simple, be easy to control, connecting and disconnecting of the circuit is controlled at the output of power supply, avoid the impact on circuit stability at high voltage input terminal frequent starting, by controlling power-on time, energy savings.
Brief description of the drawings
Fig. 1 is the intermittent power-supplying circuit structure chart of a kind of Switching Power Supply that the utility model proposes.
Embodiment
Referring to Fig. 1, it is the intermittent power-supplying circuit structure chart of a kind of Switching Power Supply that the utility model proposes.
As shown in Figure 1, a kind of intermittent power-supplying circuit of Switching Power Supply, comprise: protective circuit, reduction voltage circuit, current rectifying and wave filtering circuit, delay control circuit and ON-OFF control circuit, the output of described protective circuit connects described reduction voltage circuit, the output of described reduction voltage circuit connects described current rectifying and wave filtering circuit, the output of described current rectifying and wave filtering circuit connects described delay control circuit, the output of described delay control circuit connects described ON-OFF control circuit, described delay control circuit comprises voltage-stabiliser tube DW1, voltage-stabiliser tube DW2, relay K M1, capacitor C 3, resistance R 2 and resistance R 3, described voltage-stabiliser tube DW1 is connected in parallel on the output of described current rectifying and wave filtering circuit, described relay K M1 input node 1 connects described resistance R 3, the output of the normally closed node 2 of described relay connects described capacitor C 3, described relay often open the anode that node 3 connects described voltage-stabiliser tube DW2, the negative electrode of described voltage-stabiliser tube DW2 is connected with the normally closed node 2 of described relay.
Further, described ON-OFF control circuit comprises the multiple tube being made up of triode Q1 and triode Q2, the base stage of described multiple tube is the anodic bonding with voltage-stabiliser tube DW2 by described resistance R 3, the collector electrode of described multiple tube connects the output node 4 of described relay, and the output node 5 of described relay is connected with power consumption equipment.
Further, described protective circuit is protective tube F, and described protective tube F is arranged on live wire input.
Further, described reduction voltage circuit is the capacitance-resistance voltage reduction circuit that resistance R 1 and capacitor C 1 compose in parallel.
Further, described current rectifying and wave filtering circuit adopts rectifier bridge and filter capacitor C2.
In the utility model embodiment; by protective tube F is set on live wire; input supply voltage is protected; the capacitance-resistance voltage reduction circuit forming by resistance R 1 and capacitor C 1; input power is carried out to step-down, and current rectifying and wave filtering circuit carries out rectifying and wave-filtering, output dc voltage to the voltage through reduction voltage circuit; produce the direct voltage of about 20V by the pressure stabilization function of voltage-stabiliser tube DW1, this voltage charges to capacitor C 3 through resistance R 2, relay input node 1 and relay normally closed contact 2.
In the time that C3 both end voltage is charged to about 16V, voltage-stabiliser tube DW2 punctures, triode Q1, Q2 saturation conduction immediately, relay adhesive, power output end is power consumption equipment power supply, and the voltage in capacitor C 3 discharges by base stage and the emitter of relay input node 1, relay normally open node 3 and resistance R 3 and multiple tube simultaneously, maintains triode Q1 and triode Q2 base current and lasting conducting, now relay K M1 still continues adhesive, is worked on by control circuit.
When C3 both end voltage drops to while being not enough to maintain triode Q1 and triode Q2 conducting, two triodes cut-offs.Then relay K M1 also discharges, and its output node 4 and output node 5 disconnect, and are quit work by control apparatus, relay normally closed contact 2 resets and connects simultaneously, again capacitor C 3 is charged for the second time, so circulation, reaches the object of periodically controlling on/off.
In the utility model embodiment, the relay on-off time is determined by resistance R 2, R3 and capacitor C 3, can carry out value according to practical application.
Above the utility model is described in detail, has applied specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present utility model and core concept thereof; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (4)
1. the intermittent power-supplying circuit of a Switching Power Supply, it is characterized in that, comprise: protective circuit, reduction voltage circuit, current rectifying and wave filtering circuit, delay control circuit and ON-OFF control circuit, the output of described protective circuit connects described reduction voltage circuit, the output of described reduction voltage circuit connects described current rectifying and wave filtering circuit, the output of described current rectifying and wave filtering circuit connects described delay control circuit, the output of described delay control circuit connects described ON-OFF control circuit, described delay control circuit comprises voltage-stabiliser tube DW1, voltage-stabiliser tube DW2, relay K M1, capacitor C 3, resistance R 2 and resistance R 3, described voltage-stabiliser tube DW1 is connected in parallel on the output of described current rectifying and wave filtering circuit, described relay K M1 input node 1 connects described resistance R 3, the output of the normally closed node 2 of described relay connects described capacitor C 3, described relay often open the anode that node 3 connects described voltage-stabiliser tube DW2, the negative electrode of described voltage-stabiliser tube DW2 is connected with the normally closed node 2 of described relay.
2. the intermittent power-supplying circuit of a kind of Switching Power Supply according to claim 1, it is characterized in that, described ON-OFF control circuit comprises the multiple tube being made up of triode Q1 and triode Q2, the base stage of described multiple tube is the anodic bonding with voltage-stabiliser tube DW2 by described resistance R 3, the collector electrode of described multiple tube connects the output node 4 of described relay, and the output node 5 of described relay is connected with power consumption equipment.
3. the intermittent power-supplying circuit of a kind of Switching Power Supply according to claim 1, is characterized in that, described protective circuit is protective tube F, and described protective tube F is arranged on live wire input.
4. the intermittent power-supplying circuit of a kind of Switching Power Supply according to claim 1, is characterized in that, described current rectifying and wave filtering circuit adopts rectifier bridge and filter capacitor C2, and described reduction voltage circuit is the capacitance-resistance voltage reduction circuit that resistance R 1 and capacitor C 1 compose in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420191932.4U CN203896188U (en) | 2014-04-18 | 2014-04-18 | Intermittent power supply control circuit of switching-mode power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420191932.4U CN203896188U (en) | 2014-04-18 | 2014-04-18 | Intermittent power supply control circuit of switching-mode power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203896188U true CN203896188U (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420191932.4U Expired - Fee Related CN203896188U (en) | 2014-04-18 | 2014-04-18 | Intermittent power supply control circuit of switching-mode power supply |
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| CN (1) | CN203896188U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160698A (en) * | 2018-03-29 | 2019-08-23 | 浙江中越检测技术服务有限公司 | A kind of chemical products preparation facilities pressure detecting instrument |
-
2014
- 2014-04-18 CN CN201420191932.4U patent/CN203896188U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160698A (en) * | 2018-03-29 | 2019-08-23 | 浙江中越检测技术服务有限公司 | A kind of chemical products preparation facilities pressure detecting instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20150418 |
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| EXPY | Termination of patent right or utility model |