Current-limiting mechanism for a precision differential...

Details Current-limiting mechanism for a precision differential... Current-limiting mechanism for a precision differential...

H - Electricity

03

F

330/20

H03F 3/45 (2006.01) H03F 1/32 (2006.01) H03G 11/00 (2006.01)

Patent

CA 1203583

-12- Abstract of the Disclosure A current-limiting circuit for a differential amplifier includes a voltage generator which is switch- ed in parallel with a signal-current-generating impe- dance connected between the emitters of the differ- ential amplifier transistors whenever an input signal exceeds the voltage of the voltage generator. A prac- tical embodiment for limiting the current in either direction for opposite-polarity input signals includes a pair of voltage generators cross-coupled from a respective differential amplifier transistor base to the opposite transistor emitter via transistor switches.

441688

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