Patent ID: 8934207
Filing Date: 2015-01-13
Classification: H02H,H03K

Abstract:
1. A protective circuit for protecting one of an input and an output of an electrical apparatus from an overvoltage, comprising: a series circuit arranged at one of the input and the output, the series circuit including: a first transistor and a second transistor, the first transistor being configured as an n-channel field effect transistor and the second transistor being configured as a p-channel field effect transistor, each of the first and second transistors comprising a gate terminal, a drain terminal and a source terminal; wherein the drain terminal of the first transistor is connected to a first terminal point, the source terminal of the second transistor is connected to one of the input and the output, and the source terminal of the first transistor is connected to the drain terminal of the second transistor; and wherein the gate terminal of the first transistor is connected via a first resistor to a first pole of a voltage source and the gate connection of the second transistor is connected via a second resistor to a second pole of the voltage source.