Capacitor Timer Circuit Diagram. The main role in this circuit is played by the 555 timer ic. C is the capacitor value in farads.
When the circuit is powered on decoupling capacitor starts charging via vcc and stops charging once the capacitor voltage reaches supplied voltage. Click the switch the start charging or discharging. Here i present a very easy and simple circuit of on time delay timer circuit which is made using 2 transistors some resistors and a capacitor.
A reference designator is the r1 r2 r3 d1 c1 and q1 labels that you see.
Resistors left to right. Reading the circuit diagram. A timing circuit is an option to keep in mind for future design choices. Capacitors can be used with a resistor for timing.