CN202513891U

CN202513891U - Jitter-prevention electronic switch

Info

Publication number: CN202513891U
Application number: CN201220091449XU
Authority: CN
Inventors: 叶春; 高潮彬; 龚福智
Original assignee: CHENGDU ZHANGWO MOBILE INFORMATION TECHNOLOGY Co Ltd
Current assignee: CHENGDU ZHANGWO MOBILE INFORMATION TECHNOLOGY Co Ltd
Priority date: 2012-03-13
Filing date: 2012-03-13
Publication date: 2012-10-31
Anticipated expiration: 2022-03-13

Abstract

The utility model discloses a jitter-prevention electronic switch. The electronic switch comprises a direct current power supply, a first D trigger, a second D trigger, a diode, a relay, a transistor, a first resistor, a second resistor, a first capacitor, a second capacitor and a normally open button. Signals which are generated through pressing of the button at the fist time are delayed, and then outputted by the triggers. During the time of delay, jitter signals generated by the button exert no influence on a circuit, in this way, the jitter signals are filtered, and as a result, what are outputted from the circuit are only effective button-press signals. With the jitter-prevention electronic switch of the utility model, jitter that is produced at the moment when the button switch is started can be avoided; and the jitter-prevention electronic switch has the advantages of simple circuit as well as convenient installation and debugging.

Description

Anti-shake electronic switch

Technical field

The utility model relates to a kind of electronic switch, relates in particular to a kind of anti-shake electronic switch.

Background technology

At present, when the start button switch, the normal phenomenon that shake occurs, this is unallowed to many control circuits, because the start button switch is jitter phenomenon to occur can produce harm to control circuit, and causes the damage of circuit element.

Summary of the invention

The purpose of the utility model provides a kind of anti-shake electronic switch with regard to being in order to address the above problem.

The utility model is realized above-mentioned purpose through following technical scheme:

The utility model comprises DC power supply, first d type flip flop, second d type flip flop, diode, relay, transistor, first resistor, second resistor, first capacitor, second capacitor and Chang Kai button; First end of said relay is connected with said first end of often driving button with the electrode input end of the input of the negative pole of the cathode output end of said DC power supply, said diode, said first d type flip flop, said first d type flip flop respectively; Second end of said relay is connected with said transistorized collector electrode with the positive pole of said diode respectively; Said transistorized emitter is connected with the negative pole of said DC power supply; Said transistorized base stage is connected with the output of said second d type flip flop; The reset terminal of the negative input of said second d type flip flop and said second d type flip flop all is connected with the negative pole of said DC power supply; The key pulse input of said second d type flip flop is connected with the output of said first d type flip flop and first end of said second resistor respectively; Second end of said second resistor is connected with the reset terminal of said first d type flip flop and first end of said second capacitor respectively; Second end of said second capacitor is connected with the negative pole of said DC power supply; The negative input of said first d type flip flop is connected with the negative pole of said DC power supply; Said button second end of often opening is connected with first end of said first capacitor, and second end of said first capacitor is connected with the key pulse input of said first d type flip flop and first end of said first resistor respectively, and second end of said first resistor is connected with the negative pole of said DC power supply.

The beneficial effect of the utility model is:

The utility model provides a kind of can preventing when the start button switch, to shake; The utlity model has the simple and Installation and Debugging of circuit advantage easily.

Description of drawings

Fig. 1 is the circuit diagram of the utility model.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further:

This is as shown in Figure 1: utility model comprises DC power supply, the first d type flip flop D1, the second d type flip flop D2, diode VD, relay K, transistor VT, first resistor R 1, second resistor R 2, the first capacitor C1, the second capacitor C2 and Chang Kai button SA; First end of relay K is connected with the cathode output end of DC power supply, the negative pole of diode VD, the input of the first d type flip flop D1, the electrode input end of the first d type flip flop D1 and first end of Chang Kai button SA respectively; Second end of relay K is connected with the positive pole of diode VD and the collector electrode of transistor VT respectively; The emitter of transistor VT is connected with the negative pole of DC power supply; The base stage of transistor VT is connected with the output of the second d type flip flop D2; The reset terminal of the negative input of the second d type flip flop D2 and the second d type flip flop D2 all is connected with the negative pole of DC power supply; The key pulse input of the second d type flip flop D2 is connected with the output of the first d type flip flop D1 and first end of second resistor R 2 respectively; Second end of second resistor R 2 is connected with the reset terminal of the first d type flip flop D1 and first end of the second capacitor C2 respectively; Second end of the second capacitor C2 is connected with the negative pole of DC power supply; The negative input of the first d type flip flop D1 is connected with the negative pole of DC power supply; Often open button SA second end and be connected with first end of the first capacitor C1, second end of the first capacitor C1 is connected with the key pulse input of the first d type flip flop D1 and first end of first resistor R 1 respectively, and second end of first resistor R 1 is connected with the negative pole of DC power supply.

As shown in Figure 1, the operation principle of the utility model is following:

Utilize behind the signal lag that trigger presses button first in output, at delay time, the dither signal that button produced then no longer works to circuit, and this is just with the dither signal filtering, and what circuit was exported is effective push button signalling.

Claims

1. anti-shake electronic switch; It is characterized in that: comprise DC power supply, first d type flip flop, second d type flip flop, diode, relay, transistor, first resistor, second resistor, first capacitor, second capacitor and Chang Kai button; First end of said relay is connected with said first end of often driving button with the electrode input end of the input of the negative pole of the cathode output end of said DC power supply, said diode, said first d type flip flop, said first d type flip flop respectively; Second end of said relay is connected with said transistorized collector electrode with the positive pole of said diode respectively; Said transistorized emitter is connected with the negative pole of said DC power supply; Said transistorized base stage is connected with the output of said second d type flip flop; The reset terminal of the negative input of said second d type flip flop and said second d type flip flop all is connected with the negative pole of said DC power supply; The key pulse input of said second d type flip flop is connected with the output of said first d type flip flop and first end of said second resistor respectively; Second end of said second resistor is connected with the reset terminal of said first d type flip flop and first end of said second capacitor respectively; Second end of said second capacitor is connected with the negative pole of said DC power supply, and the negative input of said first d type flip flop is connected with the negative pole of said DC power supply, and said button second end of often opening is connected with first end of said first capacitor; Second end of said first capacitor is connected with the key pulse input of said first d type flip flop and first end of said first resistor respectively, and second end of said first resistor is connected with the negative pole of said DC power supply.