IC 78x
Power
supply, plus the ground, using current up to 1 Amp.Normally used, IC Regulator no. 78XX. When used to power circuits.
And the short circuit that occurred. If no fuse various equipment will be damaged.But if there is an electronic fuse circuit for IC number 78XX.Then when the, short-circuit.This circuit will act to stop paying current and voltage immediately.
Thus preventing the loss. When entering the input voltage, the circuit Q1 and Q2 at the circuit, a bi stable multivibrator circuit.The Q1 Q2 will start but will not work.Because, C1 connected to the base pin of Q1.Then, the charging.
Circuit Fuse IC Regulator
Making Q3, Q4 and IC78XX not work. There is no voltage at the output of the circuit.If you want to IC1 output voltage again, switch S1. To reset the
circuit to return to work.Or the bi stable multibrator circuit changes state to work again, sure enough Q4 work.