DC restoration circuit

Details DC restoration circuit DC restoration circuit

1994-10-18

1996-12-24

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

327306, 327321, 327323, 327180, 327317, 327319, 330 11, H03K 508

Patent

active

055876811

ABSTRACT:
In a D.C. restoration circuit for a digital FM radio receiver, in which demodulated signals may be presented at the output of the demodulator as low-level differential signals superimposed on a variable D.C. level, the differential signal paths are capacitively coupled to the inputs of a comparator, and the voltage excursions at these inputs are clamped when the voltage between the inputs exceeds a predetermined value.

REFERENCES:
patent: 4178558 (1979-12-01), Nagashima et al.
patent: 4549214 (1985-10-01), Hinn

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