AM-FM receiver having improved bias supply circuit

Details AM-FM receiver having improved bias supply circuit AM-FM receiver having improved bias supply circuit

1975-01-20

1976-02-03

Mayer, Albert J.

325417, H04B 106

Patent

active

039367509

ABSTRACT:
The present invention relates to an AM-FM receiver of the superheterodyne variety having a novel bias supply circuit wherein a common filter capacitor may be used for the bias supply, the AGC function in AM operation, and the AFC function in FM operation. The B+ bias is supplied through a controllable current source which adjusts the bias in accordance with the detector output. In the FM mode setting, automatic frequency control of the local oscillator is provided by bias adjustment. In the AM mode setting, automatic gain control of the IF amplifier and of the AM section of the tuner is provided by bias adjustment. The invention has preferred application to integrated circuit fabrication.

REFERENCES:
patent: 2128642 (1938-08-01), Foster
patent: 2261800 (1941-11-01), Freeman
patent: 3454882 (1969-07-01), Miller
patent: 3499981 (1970-03-01), Neal et al.
patent: 3665317 (1972-05-01), Crow
patent: 3665507 (1972-05-01), Peil
patent: 3693094 (1972-09-01), Kanamaru

Affiliated with

Also associated with

Rating

AM-FM receiver having improved bias supply circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with AM-FM receiver having improved bias supply circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and AM-FM receiver having improved bias supply circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2124624