Active circuit filter for reducing conducted radiation from a lo

Details Active circuit filter for reducing conducted radiation from a lo Active circuit filter for reducing conducted radiation from a lo

1993-09-03

1995-04-18

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Unwanted signal suppression

330107, H03K 1700, H03B 520

Patent

active

054081939

ABSTRACT:
An embodiment of the present invention comprises a series pass transistor with its emitter arranged to receive a source of DC power, its collector arranged to supply a DC load, and its base connected to the junction of a capacitor to ground and an inductor to the collector. An output capacitor from the collector to ground is alternatively included. In a second embodiment of the present invention, an operational amplifier is inserted in the base circuit to increase the effective circuit gain.

REFERENCES:
patent: 2973439 (1961-02-01), Wright
patent: 2995697 (1961-08-01), Grenier
patent: 3026469 (1962-03-01), Wilbur
patent: 3870905 (1975-03-01), Chikazawa

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