Overvoltage protection device mainly for vehicle-bound electroni

Electricity: power supply or regulation systems – Input level responsive – Using a linearly acting final control device

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323311, G05F 500

Patent

active

043474756

ABSTRACT:
The present invention relates to an overvoltage protection device designed to protect electronic components against high energy transients. The protection device comprises a varistor, across which there is connected a voltage-dividing unit comprising a resistor and a voltage-limiting element, for example a varistor or a Zener diode. The voltage appearing across the voltage-limiting element controls the output signal of the protection device by being connected to the base of a transistor. The input signal to the transistor consists of the input signal of the circuit or the input signal voltage-divided across an input resistor.

REFERENCES:
patent: 4103220 (1978-07-01), Huntley

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