High efficiency electrical power conditioner

Details High efficiency electrical power conditioner High efficiency electrical power conditioner

1976-05-14

1977-08-16

Rolinec, Rudolph V.

Amplifiers

Miscellaneous

Amplifier protection means

330 10, 330 51, H03F 2100

Patent

active

040428907

ABSTRACT:
An A.C. powered amplifier for converting low power information input signals to corresponding signals of a substantially increased power level without requiring a power transformer. A signal processor having a low power information signal input and a feedback signal input controls the state of a controllable switch. The switch power input is coupled to a source of relatively high A.C. voltage via a rectifier circuit and a first low pass filter circuit, and the switch output is coupled to the amplifier output terminal via a second low pass filter circuit. A feedback path is provided from either the switch output or the amplifier output terminal to the feedback signal input of the signal processor. The signal processor may comprise a pulse width, or pulse frequency modulation circuit.
The amplifier provides high efficiency, low power loss, and has a band width limited only by the maximum switching frequency of the controllable switch.

REFERENCES:
patent: 3585517 (1971-06-01), Herbert

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