Amplifier equipped with circuit for preventing electrostatic bre

Details Amplifier equipped with circuit for preventing electrostatic bre Amplifier equipped with circuit for preventing electrostatic bre

1980-04-21

1982-08-31

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including protection means

361100, H03F 304

Patent

active

043474829

ABSTRACT:
A circuit for preventing electrostatic breakdown consists of a resistor which is connected between ground and an input terminal of an amplifier including a transistor. A d-c voltage source applies a constant voltage to the resistor at all times, and a series circuit consisting of a diode and a Zener diode connected cathode to cathode. The anode of the Zener diode is grounded in parallel with the above-mentioned resistor, and the Zener voltage of the Zener diode is set so as to be greater than the voltage across the resistor.

REFERENCES:
patent: 3128392 (1964-04-01), Jones
patent: 3657662 (1972-04-01), Lemouzy
patent: 3706936 (1972-12-01), Krohn
patent: 4023106 (1977-05-01), Utsunomiya
patent: 4115737 (1978-09-01), Hongu et al.

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