The Circuit diagram apparent actuality is of DC power delay circuit that is based on an SCR. This circuit is a actual accessible one and can be active in abounding applications. The alive of this circuit is actual simple. If the ascribe ability is activated the capacitor C2 accuse through resistor R2 and if the voltage beyond the capacitor just exceeds the Zener diode D3’s breakdown voltage, it break down and the SCR H1 is triggered and the delayed ability will be accessible at the delayed OUT terminal.Notes.
- The circuit must be assembled on a good quality PCB.
- The Zener diode must be rated half the input supply voltage.
- The current capacity of the circuit depends on the SCR and here it is 4A.
