Delay to supply voltage for surge protector by scr

Power source that, when connected to an external circuit, and now will turn to a current surge.Power supply is a high voltage surges.External circuit therefore damage.Which can solve this problem with the delay to a power source.When supply switches.Delay circuit to work, the delay occurred during the current surge.Then connected to a power source as usual.
Operation of the circuit be When a power supply to the Supply voltage in.Delay circuit will start by Delay depending on the charge of C1 is growing.
So take some time to be full.When C1 is fully charged will allow the current to flow through ZD1 zener diode 6 volt.This will limit the voltage at the trigger pin to G (gate) of the SCR.The aforesaid conduct of the SCR Supply voltage to output Delayed supply out.

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