As soon as the voltage on the R2+R3 becomes higher than 0,6-0,7 V, T1 opens, which leads to a reduction to zero of the T2 base current. The voltage at which the short circuit protection starts to act, ...

This Adjustable Voltage Regulator is made by combining a common 78L05 with an integrated audio amplifier of the type TDA2030, an adjustable voltage regulator can be constructed in a very simple manner ...

This voltage regulator delivers smooth control of a constant voltage from 0 to 8 V. It protects the load against short circuits and indicates connection, overload, and output level.

VOLTAGE ACCURACY Of course the reason for the voltage regulator is to make the voltage more accurate, but how accurate is accurate enough. This is circuit dependent. If you are using a regulator ...