Introduction: Timer Swetch
1K Resistor (1/4W)
2200µF Electrolytic Capacitor
BC547B NPN Transistor
When the switch in the _ _ circuit is on ths circuit is on and charge Capacitor is on ths circuit is on and works when we stop switch works the voltage an Capacitor is turn on the transistor the delay time of the circuit is the capacitor valuo and Sorry for my English language
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