Amplifiers – With semiconductor amplifying device – Including differential amplifier
Patent
1995-07-24
1997-05-20
Mottola, Steven
Amplifiers
With semiconductor amplifying device
Including differential amplifier
330269, 330272, H03F 326
Patent
active
056316089
ABSTRACT:
An input driver stage for an audio power amplifier wherein the amplifier incorporates only N-channel VFETs in the output stage, the invention locks the currents in second stage (via a closed loop) which is directly connected to the VFET output stage thus allowing precise open loop predictive temperature compensated programming of the quiescent operating point of the VFET output stage into an acceptable linear area of operation--without fettering the amplifiers inherent straight forwardness OF implementation or the amplifiers excellent signal amplification characteristics.
REFERENCES:
patent: 4093925 (1978-06-01), Yokoyama
patent: 4241313 (1980-12-01), Takehara
Mitek Corporation
Mottola Steven
LandOfFree
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