Discharge time relay circuit

Posted on Dec 11, 2010

Discharge time relay circuit The timer field effect tube, and therefore have a high timing accuracy, timing and so long. When the R3-IOOOMfl, C 200VF when a delay time of 8h. P

Discharge time relay circuit
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ress the button SB, transistor VTi conduction, VT3 conduction, the relay pull KA, delay start. When the capacitor C discharges to a certain value, VT2 is turned on from off, VT3 deadline, KA released. Delay time is determined by R3, RP and C.

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