Vehicular electronic voltage regulator for protecting over-current and over-voltage short-circuit

The utility model relates to a vehicular electronic voltage regulator for protecting overcurrent and overvoltage short-circuit, which is mainly composed of a sampling and voltage stabilizing circuit, and a switching circuit which controls the excitation winding of a generator. The utility model is characterized in that a relay circuit which is composed of a resistor R1, a relay J, and a capacitor C1 is coupled in a voltage regulator circuit; the collector electrode of a high power valve T3 of the switching circuit is connected in series with a protective tube, and the emitter electrode of the high power valve T3 of the switching circuit is connected in series with an electric heating wire. The utility model can effectively solves the problem of protecting overcurrent and overvoltage short-circuit.