H - Electricity – 02 – H
Patent
H - Electricity
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H
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H02H 7/20 (2006.01) H03F 1/52 (2006.01)
Patent
CA 1100197
C-2667 A-21,571 POWER AMPLIFIER PROTECTION CIRCUIT Abstract of the Disclosure: A protection circuit for a bridge audio power ampli- fier having two pairs of output transistors coupled between positive and negative terminals of a direct current supply and providing a pair of output terminals for connection across a load. The bias of the output transistors are controlled in response to excessive current flow, a short of the output ter- minals to ground, excessive DC supply voltage, a short of the output terminals to the positive terminal of the DC supply, and excessive temperature to prevent permanent damage to the bridge audio power amplifier.
268197
Aldridge Fredrick A.
Schertz Burtron D.
General Motors Corporation
Gowling Lafleur Henderson Llp
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