Electric heating – Heating devices – Combined with diverse-type art device
Patent
1993-08-27
1995-06-13
Walberg, Teresa J.
Electric heating
Heating devices
Combined with diverse-type art device
H05B 302
Patent
active
054245109
ABSTRACT:
A circuit for varying the temperature of a first bipolar transistor in order to thermally compensate for self-heating effects of an associated device in a common signal path with the first transistor, the first transistor being configured within an isolated collector region. The circuit includes a second bipolar transistor provided within the isolated collector region and thermally coupled to the first transistor, the second transistor operable for providing heat to the first transistor to alter the temperature to a predetermined level, thus changing the operational voltage characteristics of the first transistor so as to minimize shifts in offset voltage.
REFERENCES:
patent: 3308271 (1967-03-01), Hilbiber
patent: 3320407 (1967-05-01), Holmes
patent: 3393870 (1968-07-01), Jeffrey
patent: 3887785 (1975-06-01), Ahlport
patent: 4497998 (1985-02-01), West
Simpkins, Shaun and Winthrop Gross, "Cascomp Feedforward Error Correction in High Speed Amplifier Design", IEEE Journal of Solid-State Circuits,vol. sc-18, No. 6, Dec. 1983, pp. 762-764.
Babcock Douglas W.
Brokaw A. Paul
Counts Lewis
DeVito Lawrence
Duris Robert A.
Analog Devices Inc.
Walberg Teresa J.
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