Circuit arrangement for generating a continuously variable DC vo

Details Circuit arrangement for generating a continuously variable DC vo Circuit arrangement for generating a continuously variable DC vo

1977-02-07

1978-07-04

Shoop, William M.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

323 19, H02M 7537

Patent

active

040992268

ABSTRACT:
A constant dc voltage source is connected to the non-inverting input of a differential amplifier with a negative load resistance. The output of the differential amplifier is coupled directly to the inverting input and to a filter circuit for providing a filtered dc signal, the amplitude of which is controlled by a pulse train of variable pulse duty factor connected to the input of an electronic switch which, in response to the pulses, switches the input of the filter circuit between the constant dc voltage and a reference potential.

REFERENCES:
patent: 3328718 (1967-06-01), Murray
patent: 3458820 (1969-07-01), Tashima
patent: 3549903 (1970-12-01), Lowdenslager
patent: 3564394 (1971-02-01), Opal et al.
patent: 3701059 (1972-10-01), Nyswander
patent: 3845398 (1974-10-01), Katz
patent: 3914700 (1975-10-01), Allner
patent: 4039981 (1977-08-01), Ohashi et al.

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