Control circuit for varying power output of push-pull tube ampli

Details Control circuit for varying power output of push-pull tube ampli Control circuit for varying power output of push-pull tube ampli

1986-07-07

1987-01-13

Mullins, James B.

Amplifiers

Including a push-pull stage

Power or bias supply circuits and control thereof

84 111, 84 119, H03F 328, G10H 300

Patent

active

046367403

ABSTRACT:
A biasing and control circuit for varying the output power delivered by the push-pull output stage of a power amplifier is disclosed. The biasing and control circuit incorporates both fixed and cathode biasing to allow output power to be varied without introducing distortion. A negative fixed biasing voltage is applied to the control grids of the vacuum tubes comprising the push-pull output stage, while the cathodes of such tubes are varied between ground and selected voltage levels above ground. To vary the voltage levels, the cathodes of the tubes are joined together by a common connection and coupled to ground through a variable impedance which when varied changes the conductivity of the output tubes, and thereby, the output power delivered by the amplier.

REFERENCES:
patent: 2253942 (1941-08-01), Rath
patent: 2462452 (1949-02-01), Yates
patent: 2462849 (1949-01-01), Dishal
patent: 2562476 (1951-07-01), Rado
patent: 2590104 (1952-03-01), King
patent: 2647174 (1953-07-01), Maron
patent: 2716162 (1955-08-01), Pearlman
patent: 2721907 (1955-10-01), Jacobs
patent: 2777018 (1957-01-01), Russell
patent: 2782266 (1957-02-01), Belar
patent: 2802069 (1957-08-01), Weber
patent: 2844777 (1958-07-01), Ross
patent: 3005162 (1961-10-01), Leslie
patent: 3119970 (1964-01-01), Thompson et al.
patent: 3129388 (1964-04-01), Lang et al.

Affiliated with

Also associated with

Rating

Control circuit for varying power output of push-pull tube ampli does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control circuit for varying power output of push-pull tube ampli, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control circuit for varying power output of push-pull tube ampli will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2358058