A touch switch control circuit
A switch control circuit, touch technology, applied in electronic switches, electrical components, pulse technology and other directions, can solve the problems of normal touch control, affecting the sensitivity of touch detection, small touch area, etc., to reduce circuit costs, accurate and reliable response , the effect of high touch sensitivity
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[0026] First of all, the idea and working principle of the present invention are described:
[0027] The touch IC control scheme proposed by the present invention is as follows: figure 2 Shown:
[0028] The solution consists of touch detection unit A2D, dynamic self-comparison detection unit D2A, anti-shake delay module TIMER and logic control module LOGIC. The touch control circuit in the invention does not need peripheral devices when it works normally.
[0029] The technical problem actually solved by the invention is: how to realize the touch control function in the simplest, safest, most reliable and most economical way.
[0030] The working principle of the present invention is: the human body is equivalent to AC grounding, and the finger has a certain capacitance. When the finger touches the sensing terminal TOUCH, the touch detection unit A2D can be identified and output a corresponding electrical signal, which is the process of the unit A2D in the figure. The outp...
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