Semi-conductor thermal protection arrangement

Details Semi-conductor thermal protection arrangement Semi-conductor thermal protection arrangement

1974-05-06

1976-03-02

Trammell, James D.

Electricity: power supply or regulation systems

Remote sensing

323 68, 338 22R, H02H 504

Patent

active

039420752

ABSTRACT:
A semi-conductor thermal protection arrangement is disclosed for use with class AB, B, or C power amplifiers or in any other circuit configuration wherein a reduction in drive signal at a stage prior to that of the protected semi-conductor results in a lessening of the protected semi-conductor dissipation. The arrangement comprises a temperature sensor thermally coupled with the protected semi-conductor for detecting the absolute temperature of the semi-conductor and electrically connected so as to reduce the drive signal of the semi-conductor when the temperature of such semi-conductor exceeds a predetermined temperature above the normal operating temperature of the semi-conductor.

REFERENCES:
patent: 3402131 (1968-09-01), Futaki et al.
patent: 3522480 (1970-08-01), Routh et al.

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