PROTECTIVE CIRCUIT FOR PROTECTING AN ELECTRIC CIRCUIT FROM EXCESSIVE CURRENTS OR VOLTAGES

摘要

The invention provides a protective circuit for protecting an electric circuit from excessive currents and/or voltages. The protective circuit is distinguished in that it comprises an electric resistor through which there passes the current supplied to the circuit to be protected or output by the circuit to be protected or by a current dependent thereon. The protective circuit also contains a switching element which is heated by the thermal energy output of the resistor and which switches when a specific temperature is reached. A protective circuit of this type provides reliable protection for the circuit to be protected.