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Class Information
Number: 330/134
Name: Amplifiers > With control of power supply or bias voltage > With control of input electrode or gain control electrode bias > Plural different bias control voltages provided by separate means
Description: Subject matter including at least two separate and distinct bias voltage control means as therein defined, wherein the control voltages are applied to input or gain control electrodes, and which may be applied to a single amplifying device or to more than one amplifying device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5252929 |
RF power amplifier |
Oct. 12, 1993 |
| 5216384 |
Programmable amplifier device |
Jun. 1, 1993 |
| 5216379 |
Dynamic bias amplifier |
Jun. 1, 1993 |
| 5179353 |
Power control circuit used for both analog/digital dual mode |
Jan. 12, 1993 |
| 5172071 |
Linearized output control of a nonlinear amplifier |
Dec. 15, 1992 |
| 5168148 |
Automatic gain control circuit |
Dec. 1, 1992 |
| 5136257 |
RF amplifier bias circuit |
Aug. 4, 1992 |
| 5126686 |
RF amplifier system having multiple selectable power output levels |
Jun. 30, 1992 |
| 5126688 |
Power amplifying apparatus for wireless transmitter |
Jun. 30, 1992 |
| 5101176 |
Burst control circuit for use in TDMA communications system |
Mar. 31, 1992 |
| 5015921 |
Soft start solid state switch |
May. 14, 1991 |
| 4994757 |
Efficiency improvement of power amplifiers |
Feb. 19, 1991 |
| 4873493 |
Audio amplifier |
Oct. 10, 1989 |
| 4870369 |
Circuit arrangement having a pre-amplifier connected to an opto-electric transducer |
Sep. 26, 1989 |
| 4870370 |
Method and apparatus for two stage automatic gain control |
Sep. 26, 1989 |
| 4646036 |
Signal attenuation circuit |
Feb. 24, 1987 |
| 4637073 |
Transmit/receive switch |
Jan. 13, 1987 |
| 4574248 |
RF Power amplifier for use with VHF transceivers |
Mar. 4, 1986 |
| 4521738 |
Gain control circuit |
Jun. 4, 1985 |
| 4514703 |
Automatic level control system |
Apr. 30, 1985 |
| 4459557 |
Compressor limiter for audio signal processing |
Jul. 10, 1984 |
| 4451797 |
AGC Controller for pulsed system |
May. 29, 1984 |
| 4422049 |
Gain control circuit |
Dec. 20, 1983 |
| 4380737 |
Fast AGC slew circuit |
Apr. 19, 1983 |
| 4307348 |
Automatic gain control circuit |
Dec. 22, 1981 |
| 4286492 |
Control for electronic amplifiers |
Sep. 1, 1981 |
| 4246543 |
Delayed AGC circuit |
Jan. 20, 1981 |
| 4223274 |
Amplifier for electrical signals |
Sep. 16, 1980 |
| 4219780 |
Gain controlled amplifier circuits |
Aug. 26, 1980 |
| 4213097 |
Hybrid automatic gain control circuit |
Jul. 15, 1980 |
| 4210874 |
Gain control amplifier circuit |
Jul. 1, 1980 |
| 4204172 |
Automatic gain control device for a single-sideband receiver |
May. 20, 1980 |
| 4194164 |
Variable frequency sources |
Mar. 18, 1980 |
| 4156854 |
Differential amplifier balancing system |
May. 29, 1979 |
| 4101843 |
Automatic recording level control circuit with manual sensitivity compensating circuit |
Jul. 18, 1978 |
| 4101849 |
Adaptive filter |
Jul. 18, 1978 |
| 4061874 |
System for reproducing sound information |
Dec. 6, 1977 |
| 4053848 |
Circuit arrangement for combining high frequency power components |
Oct. 11, 1977 |
| 4019150 |
PA protection circuit for a single sideband radio |
Apr. 19, 1977 |
| 4016862 |
Echoscope for examination of objects |
Apr. 12, 1977 |
| 3978422 |
Broadband automatic gain control amplifier |
Aug. 31, 1976 |
| 3961361 |
Gain control arrangement useful in a television signal processing system |
Jun. 1, 1976 |
| 3940715 |
Distortion measurement system |
Feb. 24, 1976 |
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