Retriggerable monostable with transistor

110

01:29:12

Thanks to dylanmissuwe and his circuit http://everycircuit.com/circuit/5046671502213120.

I just added a reset pushbutton and a freewheeling diode on the relay coil.

10 Ω resistor limits current for charge (top pushbutton) and quick discharge (bottom pushbutton) of capacitor.

Delay time is currently set to about 30 sec.

published 10 years ago

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