CN204481781U - A kind of timing switch circuit - Google Patents
A kind of timing switch circuit Download PDFInfo
- Publication number
- CN204481781U CN204481781U CN201520221587.9U CN201520221587U CN204481781U CN 204481781 U CN204481781 U CN 204481781U CN 201520221587 U CN201520221587 U CN 201520221587U CN 204481781 U CN204481781 U CN 204481781U
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Abstract
The utility model discloses a kind of timing switch circuit, comprises transformer W, rectifier bridge T, chip U1, relay J and key switch K1; It is characterized in that, one end of the winding N1 of described transformer W connects 220V alternating current, and the other end of the winding N1 of transformer W connects the other end of 220V alternating current, and the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively.The utility model timing switch circuit uses inverter and triode composition control circuit, the quiescent current of 555 timing circuits is made to be reduced to 1-2 microampere, the quiescent dissipation of timing switch circuit can be reduced greatly, not only saves energy but also add useful life of timing switch.
Description
Technical field
The utility model relates to a kind of switch, specifically a kind of timing switch circuit.
Background technology
Current electronic applications widely used switching component during timing switch, be widely used in delay control system, but the timing switch most of the time is in idle state, most of timing switch is good not for the process of quiescent dissipation in the market, cause the quiescent dissipation of timing switch when not working very large, not only bad for saves energy, and the loss of timing switch components and parts can be increased, reduce its useful life.
Utility model content
The purpose of this utility model is to provide that a kind of structure is simple, the timing switch circuit of diverse in function, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of timing switch circuit, comprises transformer W, rectifier bridge T, chip U1, relay J and key switch K1, it is characterized in that, one end of the winding N1 of described transformer W connects 220V alternating current, the other end of the winding N1 of transformer W connects the other end of 220V alternating current, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 2 of rectifier bridge T connects electric capacity C1, resistance R1, the collector electrode of resistance R2 and triode VT1, the other end ground connection of electric capacity C1, the emitter contact resistance R3 of triode VT1, the pin 4 of chip U1 and the pin 8 of chip U1, the base stage of triode VT1 connects the pin 4 of chip U2 and the pin 1 of chip U3, the port 4 of rectifier bridge T connects the anode of diode D1, electric capacity C2, electric capacity C3, electric capacity C5, key switch K1, the pin 1 of relay J and chip U1, the other end of relay J connects the negative electrode of diode D1, the pin 3 of chip U1 and the pin 3 of chip U3, the pin 5 of chip U1 connects the other end of electric capacity C2, the other end of resistance R3 connects the pin 6 of chip U1, the pin 7 of chip U1 and the other end of electric capacity C3, the pin 2 contact resistance R4 of chip U1, the pin 1 of chip U2 connects pin 2 and the electric capacity C4 of chip U2, the pin 3 of chip U2 connects the pin 4 of chip U3, the other end of pin 2 contact resistance R1 of chip U3 and the other end of electric capacity C5, the other end of the other end contact resistance R2 of electric capacity C4, the other end of resistance R4 and the other end of key switch K1, the model of described chip U1 is NE555, chip U2 and chip U3 is NL17SZ04.
As preferred version of the present utility model: 220V voltage is become 9V voltage by winding N1 and N2 of described transformer W.
As preferred version of the present utility model: described relay J is normally opened contact relay.
Compared with prior art, the beneficial effects of the utility model are: the utility model timing switch circuit uses inverter and triode composition control circuit, the quiescent current of 555 timing circuits is made to be reduced to 1-2 microampere, the quiescent dissipation of timing switch circuit can be reduced greatly, not only saves energy but also add useful life of timing switch.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of timing switch circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of timing switch circuit, comprise transformer W, rectifier bridge T, chip U1, relay J and key switch K1, it is characterized in that, one end of the winding N1 of described transformer W connects 220V alternating current, the other end of the winding N1 of transformer W connects the other end of 220V alternating current, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 2 of rectifier bridge T connects electric capacity C1, resistance R1, the collector electrode of resistance R2 and triode VT1, the other end ground connection of electric capacity C1, the emitter contact resistance R3 of triode VT1, the pin 4 of chip U1 and the pin 8 of chip U1, the base stage of triode VT1 connects the pin 4 of chip U2 and the pin 1 of chip U3, the port 4 of rectifier bridge T connects the anode of diode D1, electric capacity C2, electric capacity C3, electric capacity C5, key switch K1, the pin 1 of relay J and chip U1, the other end of relay J connects the negative electrode of diode D1, the pin 3 of chip U1 and the pin 3 of chip U3, the pin 5 of chip U1 connects the other end of electric capacity C2, the other end of resistance R3 connects the pin 6 of chip U1, the pin 7 of chip U1 and the other end of electric capacity C3, the pin 2 contact resistance R4 of chip U1, the pin 1 of chip U2 connects pin 2 and the electric capacity C4 of chip U2, the pin 3 of chip U2 connects the pin 4 of chip U3, the other end of pin 2 contact resistance R1 of chip U3 and the other end of electric capacity C5, the other end of the other end contact resistance R2 of electric capacity C4, the other end of resistance R4 and the other end of key switch K1, the model of described chip U1 is NE555, chip U2 and chip U3 is NL17SZ04.
220V voltage is become 9V voltage by winding N1 and N2 of transformer W.
Relay J is normally opened contact relay.
Operation principle of the present utility model is: 220V alternating current is after transformer W transformation and rectifier bridge T rectification, export 9V direct current to circuit supply, because the voltage on electric capacity C4, C5 can not transition, make inverter U3 circuit export in high level, U2 exports and is locked in electronegative potential.Triode VT1 ends, and makes the quiescent current of whole circuit very little.When pressing timing switch K1, the pin 1 of .U2 and pin 2 there is a negative polarity arteries and veins
Go out existing.U2 output 4 pin exports in high level, and triode VT1 conducting, 555 timer chips just have supply power voltage.Meanwhile, there is negative pole pulse to add to 2 pin of 555, make 555 set, pin 3 output pulse signal of 555 timers.Make relay J adhesive, start timing, circuit uses inverter and triode composition control circuit, the quiescent current of 555 timing circuits is made to be reduced to 1-2 microampere, the quiescent dissipation of timing switch circuit can be reduced greatly, not only saves energy but also add useful life of timing switch.
Claims (3)
1. a timing switch circuit, comprises transformer W, rectifier bridge T, chip U1, relay J and key switch K1, it is characterized in that, one end of the winding N1 of described transformer W connects 220V alternating current, the other end of the winding N1 of transformer W connects the other end of 220V alternating current, the two ends of the winding N2 of transformer W connect the port one of rectifier bridge T and the port 3 of rectifier bridge T respectively, the port 2 of rectifier bridge T connects electric capacity C1, resistance R1, the collector electrode of resistance R2 and triode VT1, the other end ground connection of electric capacity C1, the emitter contact resistance R3 of triode VT1, the pin 4 of chip U1 and the pin 8 of chip U1, the base stage of triode VT1 connects the pin 4 of chip U2 and the pin 1 of chip U3, the port 4 of rectifier bridge T connects the anode of diode D1, electric capacity C2, electric capacity C3, electric capacity C5, key switch K1, the pin 1 of relay J and chip U1, the other end of relay J connects the negative electrode of diode D1, the pin 3 of chip U1 and the pin 3 of chip U3, the pin 5 of chip U1 connects the other end of electric capacity C2, the other end of resistance R3 connects the pin 6 of chip U1, the pin 7 of chip U1 and the other end of electric capacity C3, the pin 2 contact resistance R4 of chip U1, the pin 1 of chip U2 connects pin 2 and the electric capacity C4 of chip U2, the pin 3 of chip U2 connects the pin 4 of chip U3, the other end of pin 2 contact resistance R1 of chip U3 and the other end of electric capacity C5, the other end of the other end contact resistance R2 of electric capacity C4, the other end of resistance R4 and the other end of key switch K1, the model of described chip U1 is NE555, chip U2 and chip U3 is NL17SZ04.
2. a kind of timing switch circuit according to claim 1, is characterized in that, 220V voltage is become 9V voltage by winding N1 and N2 of described transformer W.
3. a kind of timing switch circuit according to claim 1, is characterized in that, described relay J is normally opened contact relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221587.9U CN204481781U (en) | 2015-04-14 | 2015-04-14 | A kind of timing switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520221587.9U CN204481781U (en) | 2015-04-14 | 2015-04-14 | A kind of timing switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204481781U true CN204481781U (en) | 2015-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520221587.9U Expired - Fee Related CN204481781U (en) | 2015-04-14 | 2015-04-14 | A kind of timing switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204481781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636325A (en) * | 2016-03-11 | 2016-06-01 | 金柯楠 | Electronic mosquito killer circuit |
-
2015
- 2015-04-14 CN CN201520221587.9U patent/CN204481781U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636325A (en) * | 2016-03-11 | 2016-06-01 | 金柯楠 | Electronic mosquito killer circuit |
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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: 20150715 Termination date: 20160414 |
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| CF01 | Termination of patent right due to non-payment of annual fee |