Filter circuit arrangements with automatic adjustment of cut-off

Details Filter circuit arrangements with automatic adjustment of cut-off Filter circuit arrangements with automatic adjustment of cut-off

1989-01-17

1991-06-11

Callahan, Timothy P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328167, 328155, H03K 500, H03K 320

Patent

active

050234919

ABSTRACT:
For automatically controlling cut-off frequencies of filter units, a filter circuit comprises a controller having an oscillator producing a first output signal, a sample filter unit supplied with the first output signal and producing a second output signal, a status signal producing circuit responsive to the second output signal and producing a status signal representative of a deviation of the second output signal from a standard state, and a comparator operative to compare the status signal with a standard signal for producing said control signal.

REFERENCES:
patent: 3761741 (1973-09-01), Hozft
patent: 3946249 (1976-03-01), Nagami et al.
patent: 4257018 (1981-03-01), Masdea et al.
patent: 4322641 (1982-03-01), Packard
patent: 4667120 (1987-05-01), Okada et al.
patent: 4782246 (1988-11-01), Kuroyanagi et al.
patent: 4818903 (1989-04-01), Kawano
patent: 4841461 (1989-06-01), Yamamoto et al.

Affiliated with

Also associated with

Rating

Filter circuit arrangements with automatic adjustment of cut-off does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Filter circuit arrangements with automatic adjustment of cut-off, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Filter circuit arrangements with automatic adjustment of cut-off will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-784518