Amplifiers – With semiconductor amplifying device – Including current mirror amplifier
Patent
1981-02-02
1983-10-11
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including current mirror amplifier
330298, H03F 304
Patent
active
044095589
ABSTRACT:
An amplifier arrangement for use in power protection circuits comprises two transistors arranged as a current mirror. The signal voltage is applied to the emitter electrode of one of the two transistors and the collector of the other transistor provides an output voltage via a resistor. The input circuit of the current mirror, in which the one transistor is included, is driven by a current source. Via an emitter-follower transistor the current source is coupled to the common base electrodes of the two transistors. The collector current of said emitter-follower transistor is fed to a tapping on said resistor in order to compensate for variations in the current gain factor of the transistors.
REFERENCES:
patent: 3831040 (1974-08-01), Namba et al.
Knijnenburg Johannus P. H.
Verhoeven Bernardus
Franzblau Bernard
Mayer Robert T.
Mullins James B.
U.S. Philips Corporation
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