Power limiting circuitry for use with power amplifier

Details Power limiting circuitry for use with power amplifier Power limiting circuitry for use with power amplifier

1977-10-28

1979-03-27

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including particular power supply circuitry

330143, 330207P, 330298, H03F 304

Patent

active

041468473

ABSTRACT:
Power limiting circuitry for use with a power amplifier, the power amplifier having (a) a power supply voltage source connected thereto and (b) a load impedance, the power limiting circuitry comprising detecting means for detecting the magnitude of the load impedance; and control means responsive to the detecting means for controlling the magnitude of the power supply voltage applied to the power amplifier; means for sensing the temperature at a predetermined point in the power amplifier and generating an output signal when the temperature exceeds a predetermined amount; and AND circuit means responsive to the detecting means and the temperature sensing means for actuating the control means in response thereto.

REFERENCES:
patent: 3814988 (1974-06-01), Ito
patent: 3912981 (1975-10-01), Tsurushima

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