Transistor amplifier with protective circuit

Details Transistor amplifier with protective circuit Transistor amplifier with protective circuit

1975-12-08

1977-12-06

Dahl, Lawrence J.

Amplifiers

Miscellaneous

Amplifier protection means

330277, 361 78, 330298, H03F 2100

Patent

active

040619834

ABSTRACT:
A transistor amplifier including a bipolar transistor supplied with an input signal and a field effect transistor which is directly connected to an output electrode of the bipolar transistor to amplify a signal applied thereto. The transistor amplifier has a protective circuit which senses the load impedance and actuates a protective means across an input terminal of the transistor amplifier when the sensed load impedance is lower than a predetermined value. Accordingly, the transistor amplifier is protected against overload conditions.

REFERENCES:
patent: 3526810 (1970-09-01), Williams et al.
patent: 3904979 (1975-09-01), Suzuki

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