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Touching delay lamp switch circuit(8)

2016-08-12 00:57  
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Touching delay lamp switch circuit(8)
The chart shows the touching delay light switch with good performance , the circuit is characterized by: minimal static power consumption; switch has only two terminals outside, which can replace the ordinary switch. Circuit delay time is mainly decided by C1, R2 discharging time constant. In addition, the trigger sensitivity of VT1 and the magnification of VT2 have a significant impact on the delay time.