Features
Can generate time interval from 0.1 second to 10 second.
The circuit can operate from 6V to 12V and control output current of up to 3A.
Open collector output can drive inductive load; such as relay, electric valve and motor.
Longer interval can be obtained by increasing capacitance.
Block Diagram
Circuit Diagram
Power Transistor
NEC 2SD795: VCEO = 50V, IC = 3A, PD = 20W, hFE = 160
Operation
t1 = 0.69C1R3 Example: C1 = 100uF, R3 = 50kΩ à t1 = 3.5sec
t2 = 0.69C2R4 C2 = 100uF, R4 = 100kΩ à t2 = 6.9sec
ok but less info
ReplyDeleteMr. Bala,
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Abufaris on electrical wiring