Press light switch double circuit 9


Posted on Mar 28, 2007

A circuit configuration is relatively new strong key touch-state switch. Normally, product thyristor VT1, VT2 are in the off-state I-what little light the lamp F. At this point


Press light switch double circuit 9
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capacitance c. After VD1 ~ VD4 bridge rectifier, charging about full around 3lOV DC voltage. Turn on the lights, just click the touch electrode sheet M2, the leakage current of the Optional human foot z passing through the gate of VT2, VT2 so quickly opened, the lamp E powered light. Left hand rear electrode films, Ding Tian thyristor as in Afghanistan back into the road, although the loss of r door trigger current, but still maintain VT2 Ji state. (Ix) cut off the feet, electric capacitance Cz unravel VT2, R, can be filled with left and right positive negative charge. Turn off the lights when needed, touch an F electrode sheet Ml, empathy thyristor VT1 can quickly open, then (,: through the stored charge through VT1 VT2 superimposed on the reverse side Sh make VT2 Gang instant loss forward anode voltage shutdown, power off the lamp E wood Road brother lU feature is that as long as the sample a suitable value of R after the lamp when trampling manpower from Ji after M1, the anode current J flowing through the VT1 little can wri themselves off to save power circuit consumption .VTI, VT2 u J selected 2N6560, BT169D type and other small plastic unidirectional Transistor, other components requires Sapporo FIG.




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