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555-556 Timer info ==>

Timer Plus Relay Circuit


RUNNING CIRCUIT:

Closing S1 Momentary-begins a timing cycle. The Relay is actuated during the entire cycle. R1 And C1 Conrol time delay. C2 prevents false Triggering. D2 absorbs voltage generated by relay coil when relayis switched OFF. Use coution when connecting line-powered devices to relay connections.

TYPICAL DELAYS (SECONDS)

R1 C1= 10µF C1= 100 µF
100 K 2 16
220 K 3 33
470 K 6 70
1 M 15 175


Keywords : 555, 556, Timers, Timer, Pulse, Astable, Bistable, Monostable, Circuit, Square, Wave, Sinus, 555pin
Writer : delon  |
19 Apr 2006 Wed   
|  20.559 Views
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