CN203537357U - Simple time delay switching circuit - Google Patents
Simple time delay switching circuit Download PDFInfo
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- CN203537357U CN203537357U CN201320630014.2U CN201320630014U CN203537357U CN 203537357 U CN203537357 U CN 203537357U CN 201320630014 U CN201320630014 U CN 201320630014U CN 203537357 U CN203537357 U CN 203537357U
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Abstract
The utility model provides a simple time delay switching circuit including a key K1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a diode D1, a PNP-type triode Q1, an NPN-type triode Q2, an NPN-type triode Q3, a capacitor C1 and a capacitor C2. The simple time delay switching circuit achieves time delay switching through simple components, is easy to achieve, low in cost and reliable, and solves the problems of the complexity, instability and high cost of a time delay switching circuit in the prior art.
Description
Technical field
The utility model relates to a kind of delay switch machine simple circuit.
Background technology
Current conventional time-delay switch control circuit, generally with simple hardware circuit, add that MCU controls to realize, or relay, in conjunction with the circuit of some triggerings, is realized the ON-OFF control circuit with delay function, then or be exactly with some more expensive special IC chip controls switches etc.
The shortcoming of prior art is with MCU, to add some hardware control circuits to realize, and can increase the expense of software resource, and can be because the bug of program or the inefficacy that collapse causes switching circuit need to strengthen reliability testing and checking; Utilize in addition some circuits for triggering, relay, intelligent IC chip etc. is realized ON-OFF control circuit, circuit meeting relative complex, circuit power consumption own also can be larger, and cost compare is high.
Summary of the invention
The technical problems to be solved in the utility model, is to provide a kind of delay switch machine simple circuit, solves the dynamo-electric road of existing delay switch complexity, the problem that cost is high.
The utility model is achieved in that
A delay switch machine simple circuit, comprises button K1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, diode D1, positive-negative-positive triode Q1, NPN type triode Q2, NPN type triode Q3, capacitor C 1 and capacitor C 2, one end of button K1 is connected with the emitter of positive-negative-positive triode Q1 with positive source, the other end of button K1 is connected with one end of resistance R 1 with the anode of diode D1, one end of the other end of resistance R 1 and capacitor C 1, one end of resistance R 2 is connected with the base stage of NPN type triode Q2, the other end of capacitor C 1, the other end of resistance R 2 is connected with power cathode with the emitter of NPN type triode Q2, the base stage of positive-negative-positive triode Q1 is connected with one end of resistance R 4, the collector electrode of positive-negative-positive triode Q1 and the negative electrode of diode D1, one end of resistance R 3 is connected with circuit output end, the other end of resistance R 4 is connected with the collector electrode of NPN type triode Q3, the other end of resistance R 3 is connected with one end of resistance R 5 with the collector electrode of NPN type triode Q2, the base stage of NPN type triode Q3 is connected with one end of capacitor C 2 with the other end of resistance R 5, the emitter of NPN type triode Q3 and the other end of capacitor C 2 are connected with power cathode.
The utility model also provides a kind of mainboard with delay switch machine simple circuit, comprise processor, power supply processing circuit and on/off circuit, described processor, on/off circuit are connected with power supply processing circuit, described processor is connected with the circuit output end of on/off circuit, and described on/off circuit is above-mentioned a kind of delay switch machine simple circuit.
The utility model also provides a kind of pager with delay switch machine simple circuit, comprise processing module, power supply processing module, communication module, display module and switching on and shutting down control module, described processing module, communication module, switching on and shutting down control module and display module are connected with power supply processing module, described communication module, switching on and shutting down control module and display module are connected with processing module, described switching on and shutting down control module comprises above-mentioned a kind of delay switch machine simple circuit, and the circuit output end of described delay switch machine simple circuit is connected with processing module.
The utility model has the advantage of: owing to being that pure hardware circuit is realized, avoided going to control with MCU, reduced software resource; Meanwhile, avoid because program unstable causes the unstable of circuit; This circuit is with respect to some triggers in addition, the delay switch circuit that relay etc. form, or control specially IC chip, circuit is simple and cost is low, is easy to realize.
Accompanying drawing explanation
The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.
Fig. 1 is circuit diagram of the present utility model.
Embodiment
Refer to shown in Fig. 1, below will be elaborated to the utility model.
As shown in Figure 1, a kind of delay switch machine simple circuit, comprises button K1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, diode D1, positive-negative-positive triode Q1, NPN type triode Q2, NPN type triode Q3, capacitor C 1 and capacitor C 2, one end of button K1 is connected with the emitter of positive-negative-positive triode Q1 with positive source (being VCC end in Fig. 1), the other end of button K1 is connected with one end of resistance R 1 with the anode of diode D1, one end of the other end of resistance R 1 and capacitor C 1, one end of resistance R 2 is connected with the base stage of NPN type triode Q2, the other end of capacitor C 1, the emitter of the other end of resistance R 2 and NPN type triode Q2 is connected with power cathode (being earth terminal in Fig. 1), the base stage of positive-negative-positive triode Q1 is connected with one end of resistance R 4, the collector electrode of positive-negative-positive triode Q1 and the negative electrode of diode D1, one end of resistance R 3 is connected with circuit output end (being Vout end in Fig. 1), the other end of resistance R 4 is connected with the collector electrode of NPN type triode Q3, the other end of resistance R 3 is connected with one end of resistance R 5 with the collector electrode of NPN type triode Q2, the base stage of NPN type triode Q3 is connected with one end of capacitor C 2 with the other end of resistance R 5, the emitter of NPN type triode Q3 and the other end of capacitor C 2 are connected with power cathode.
To the operation principle of the utility model circuit be elaborated below:
Circuit start: when button K1 presses, button K1 conducting, power supply VCC charges through diode D1, resistance R 3 and 5 pairs of capacitor C 2 of resistance R, and the voltage at capacitor C 2 two ends is charged to be knot threshold voltage, the NPN type triode Q3 conducting of NPN type triode Q3 by the time.After NPN type triode Q3, resistance R 4 two ends are low level, positive-negative-positive triode Q1 conducting subsequently, thus power supply VCC holds to circuit output end Vout through positive-negative-positive triode Q1.Simultaneously, when button K1 conducting, power supply VCC also can be through 1 charging of 1 pair of capacitor C of resistance R, it is long that the time that capacitor C 1 is charged to the be knot threshold voltage of NPN type triode Q2 should be charged to time of be knot threshold voltage of NPN type triode Q3 than capacitor C 2, avoided before NPN type triode Q3 conducting, conducting of NPN type triode Q2, capacitor C 2 cannot continue charging, NPN type triode Q3 cannot conducting, thereby, cause the positive-negative-positive triode Q1 cannot conducting, power supply VCC end also just cannot arrive circuit output end Vout.So here, the charging interval of necessary assurance C1 is more than the charging interval length of C2, and when making NPN type triode Q3 conducting, NPN type triode Q2 does not also have conducting, thereby makes power supply VCC output to output end vo ut.When unclamping button K1, output end vo ut continues to keep the conducting of NPN type triode Q3 through resistance R 3 and resistance R 5, thereby completes self-locking circuit, keeps the conducting of positive-negative-positive triode Q1.Completed start process.
C2 in start process is for controlling the time delay charging capacitor of available machine time, and the length of available machine time can realize by the value of control capacittance C2 and resistance R 5.
Circuit shutdown: when long button K1, capacitor C 1 is through the charging of resistance R 1, when being charged to certain time, make the base potential of NPN type triode Q2 be lifted to the threshold value of conducting, NPN type triode Q2 conducting, is dragged down rapidly the base voltage of NPN type triode Q3, and NPN type triode Q3 becomes cut-off from conducting, and then positive-negative-positive triode Q1 also becomes cut-off from conducting, thereby deenergization VCC is to circuit output end Vout.Completed shutdown process.Resistance R 2 forms discharge loop with capacitor C 1 simultaneously, for start is next time prepared.
C1 in shutdown process is for controlling the time delay charging capacitor of unused time, and the length of unused time can realize by the value of control capacittance C1 and resistance R 1.
This delay switch machine simple circuit can design on mainboard and can be used on multiple electronic product, and the utility model also provides a kind of mainboard and pager with delay switch machine simple circuit for this reason.
To sum up, the utility model, as long as select suitable resistance and capacitance, just can be controlled the delay time of startup and shutdown, and the utility model utilizes some simple components and parts, realizes a kind of easy, ON-OFF control circuit with time delay, and cost is low is easy to realization.
Although more than described embodiment of the present utility model; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present utility model; those of ordinary skill in the art are in equivalent modification and the variation done according to spirit of the present utility model, all should be encompassed in the scope that claim of the present utility model protects.
Claims (3)
1. a delay switch machine simple circuit, is characterized in that: comprise button K1, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, diode D1, positive-negative-positive triode Q1, NPN type triode Q2, NPN type triode Q3, capacitor C 1 and capacitor C 2, one end of button K1 is connected with the emitter of positive-negative-positive triode Q1 with positive source, the other end of button K1 is connected with one end of resistance R 1 with the anode of diode D1, one end of the other end of resistance R 1 and capacitor C 1, one end of resistance R 2 is connected with the base stage of NPN type triode Q2, the other end of capacitor C 1, the other end of resistance R 2 is connected with power cathode with the emitter of NPN type triode Q2, the base stage of positive-negative-positive triode Q1 is connected with one end of resistance R 4, the collector electrode of positive-negative-positive triode Q1 and the negative electrode of diode D1, one end of resistance R 3 is connected with circuit output end, the other end of resistance R 4 is connected with the collector electrode of NPN type triode Q3, the other end of resistance R 3 is connected with one end of resistance R 5 with the collector electrode of NPN type triode Q2, the base stage of NPN type triode Q3 is connected with one end of capacitor C 2 with the other end of resistance R 5, the emitter of NPN type triode Q3 and the other end of capacitor C 2 are connected with power cathode.
2. a mainboard with delay switch machine simple circuit, comprise processor, power supply processing circuit and on/off circuit, described processor, on/off circuit are connected with power supply processing circuit, described processor is connected with the circuit output end of on/off circuit, it is characterized in that: described on/off circuit is a kind of delay switch machine simple circuit claimed in claim 1.
3. a pager with delay switch machine simple circuit, comprise processing module, power supply processing module, communication module, display module and switching on and shutting down control module, described processing module, communication module, switching on and shutting down control module is connected with power supply processing module with display module, described communication module, switching on and shutting down control module is connected with processing module with display module, it is characterized in that: described switching on and shutting down control module includes a kind of delay switch machine simple circuit claimed in claim 1, the circuit output end of described delay switch machine simple circuit is connected with processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630014.2U CN203537357U (en) | 2013-10-12 | 2013-10-12 | Simple time delay switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320630014.2U CN203537357U (en) | 2013-10-12 | 2013-10-12 | Simple time delay switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203537357U true CN203537357U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320630014.2U Expired - Fee Related CN203537357U (en) | 2013-10-12 | 2013-10-12 | Simple time delay switching circuit |
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| Country | Link |
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| CN (1) | CN203537357U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168006A (en) * | 2014-08-15 | 2014-11-26 | 常州工学院 | Delayed power-on and power-off circuit |
| CN104905674A (en) * | 2015-06-25 | 2015-09-16 | 南昌大学 | Electric pressure cooker and power-on and power-off control circuit thereof |
| CN106292358A (en) * | 2015-06-29 | 2017-01-04 | 无锡小天鹅股份有限公司 | Washing machine and for its a key switch machine control circuit |
-
2013
- 2013-10-12 CN CN201320630014.2U patent/CN203537357U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168006A (en) * | 2014-08-15 | 2014-11-26 | 常州工学院 | Delayed power-on and power-off circuit |
| CN104905674A (en) * | 2015-06-25 | 2015-09-16 | 南昌大学 | Electric pressure cooker and power-on and power-off control circuit thereof |
| CN106292358A (en) * | 2015-06-29 | 2017-01-04 | 无锡小天鹅股份有限公司 | Washing machine and for its a key switch machine control 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20181012 |