Amplifiers – Signal feedback – Combined with control of bias voltage of signal amplifier
Patent
1981-04-06
1984-04-03
Rubinson, G. Z.
Amplifiers
Signal feedback
Combined with control of bias voltage of signal amplifier
179170NC, 330298, 361119, 361 91, H04M 1900, H02H 322
Patent
active
044409800
ABSTRACT:
An overvoltage protection arrangement for preventing the occurrence of breakdown of a subscriber line control stage, independent of its structure and the integration technology used, by providing short-circuiting diodes in the control stage to prevent the occurrence of the overvoltage and providing voltage-limiting elements in those positions where overvoltage charge must be drained.
REFERENCES:
patent: 3564338 (1971-02-01), Teshirogi et al.
patent: 4254442 (1981-03-01), Dijkmans et al.
patent: 4275277 (1981-06-01), Ferrieu
patent: 4282555 (1981-08-01), Svedberg
patent: 4306122 (1981-12-01), Nijman et al.
patent: 4315304 (1982-02-01), Marez et al.
patent: 4331994 (1982-05-01), Wirth
patent: 4338573 (1982-07-01), van den Bungelaar et al.
patent: 4356354 (1982-10-01), Ferrieu
Mullard Outlook 4/71, Jul.; Technical Section, pp. 5-8; "50 W Audio Amplifier".
Electronics Design 23; Nov. 8, 1977; pp. 102-104; "Buffer Circuit For Line Driver Protects Against Shorts and .+-.325-V Surges," by Roxton Baker.
Briody Thomas A.
George Keith E.
Rubinson G. Z.
Streeter William J.
U.S. Philips Corporation
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