Low level field effect transistor amplifier

Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock

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330253, H03K 520

Patent

active

040537951

ABSTRACT:
A pair of input field effect transistors are arranged as a differential pair having an electrode of each connected in common and connected in turn to a circuit common by means of a third field effect transistor. A pair of output field effect transistors are coupled to the input field effect transistors and have an electrode of each connected in common and coupled to the gate of the third field effect transistor, thereby providing an amplifier which relatively insensitive to change in the threshold voltage of the field effect transistors.

REFERENCES:
patent: 3731215 (1973-05-01), Peil et al.
patent: 3810031 (1974-05-01), Poujois
patent: 3870898 (1975-03-01), Hoehn
patent: 3898576 (1975-08-01), Fukaya
patent: 3970951 (1976-07-01), Hoffman

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