Anti-jitter touch switch

Abstract

The invention discloses an anti-jitter touch switch, and the touch switch comprises a power circuit, a counter, a key, a pulse circuit, a reset circuit, a triode, and a relay, wherein the counter, the key, the pulse circuit, the reset circuit, the triode and the relay are respectively connected with the power supply. The pulse circuit is used for inputting a pulse signal to the counter. The reset circuit is connected with the counter, and is used for resetting an output end level of the counter. The key is connected with the reset circuit, and is used for triggering the pulse circuit to generate the pulse signal. The base electrode of the triode is connected with the counter. The connection and cutoff of the triode are controlled through a counting pulse generated by the counter under the action of the key, thereby controlling the relay to connect or disconnect an electric appliance. A capacitor C2 is discharged under the action of the key K, and a timer obtains the pulse signal. After the key K is released and the capacitor C2 is charged, the timer can output a low level. In this time period, any jitter of the key K cannot generate a second counting pulse, thereby achieving the anti-jitter effect of the switch.

Description

technical field [0001] The invention relates to an electric appliance control device, in particular to an anti-vibration light touch switch. Background technique [0002] In the process of connecting the circuit, it is often realized by pressing the switch button, such as the keyboard of a computer, and special measures are taken for this problem. The response of many electronic circuits is much more sensitive than human perception. In this way, when we press the button of some electronic equipment, it is only pressed once in the macroscopic view, but at the critical moment of contact and separation of the contacts of the switch, it is likely to Due to reasons such as contacts and actions, there are many times of on and off. This phenomenon of key vibration is a common phenomenon. If this problem is not considered, it will cause an uncertain number of times after pressing the key once. The operation result of the on-off button. [0003] Therefore, there is a need for a sim...

AI Technical Summary

Problems solved by technology

The response of many electronic circuits is much more sensitive than human perception. In this way, when we press the button of some electronic equipment, it is only pressed once in the macroscopic view, but at the critical moment of contact and separation of the contacts of the switch, it is likely to Due to reasons such as contacts and actions, there are many times of on and off. This phenomenon of key vibration is a common phenomenon. If this problem is not considered, it will cause an uncertain number of times after pressing the key once. Operation result of on-off button

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