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Class Information
Number: 330/260
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including differential amplifier > Having signal feedback means
Description: Subject matter wherein a portion of the electrical signal output energy is applied to the input of the amplifier.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4651210 |
Adjustable gamma controller |
Mar. 17, 1987 |
| 4641105 |
Apparatus and method for noise reduction in a linear amplifier |
Feb. 3, 1987 |
| 4638260 |
Audio amplifier |
Jan. 20, 1987 |
| 4634994 |
Bipolar logical circuit arrangement for signal regeneration |
Jan. 6, 1987 |
| 4634993 |
High gain, low drift operational amplifier for sample and hold circuit |
Jan. 6, 1987 |
| 4629997 |
Amplifier active load |
Dec. 16, 1986 |
| 4628279 |
Wideband feedback amplifier |
Dec. 9, 1986 |
| 4618833 |
Operational amplifier offset trim that does not change the offset potential temperature drift |
Oct. 21, 1986 |
| 4599572 |
Voltage adder circuit |
Jul. 8, 1986 |
| 4595883 |
Emitter-follower type single-ended push-pull circuit |
Jun. 17, 1986 |
| 4593252 |
Enhanced transconductance amplifier |
Jun. 3, 1986 |
| 4588858 |
Differential amplifiers and method of differentially driving a two-wire line circuit |
May. 13, 1986 |
| 4583052 |
Amplifier having complete isolation of power sources |
Apr. 15, 1986 |
| 4577336 |
Integrable frequency divider circuit having a feedback controlled differential amplifier as its preamplifier circuit |
Mar. 18, 1986 |
| 4573019 |
Current mirror circuit |
Feb. 25, 1986 |
| 4559502 |
Multi-stage amplifier with capacitive nesting for frequency compensation |
Dec. 17, 1985 |
| 4551642 |
Level shifting circuit |
Nov. 5, 1985 |
| 4549146 |
Systems and methods for compensating for element nonlinearities in electronic circuits |
Oct. 22, 1985 |
| 4547741 |
Noise reduction circuit with a main signal path and auxiliary signal path having a high pass filter characteristic |
Oct. 15, 1985 |
| 4546327 |
Analog signal power amplifier circuit |
Oct. 8, 1985 |
| 4543538 |
Complementary output amplifier with an input for offsetting voltages |
Sep. 24, 1985 |
| 4542308 |
Sampling comparator circuit for processing a differential input |
Sep. 17, 1985 |
| 4539491 |
Voltage/current conversion circuit |
Sep. 3, 1985 |
| 4536717 |
Compensated inverting/noninverting differential amplifier |
Aug. 20, 1985 |
| 4529947 |
Apparatus for input amplifier stage |
Jul. 16, 1985 |
| 4525677 |
Differential amplifier having high common-mode rejection ratio |
Jun. 25, 1985 |
| 4524327 |
Operational amplifier |
Jun. 18, 1985 |
| 4521739 |
Low offset voltage transistor bridge transconductance amplifier |
Jun. 4, 1985 |
| 4521704 |
Differential amplifying circuit |
Jun. 4, 1985 |
| 4517525 |
Balancing compensation in differential amplifiers with a single-ended drive |
May. 14, 1985 |
| 4514702 |
Logarithmic electronic gain control circuit |
Apr. 30, 1985 |
| 4512008 |
Small signal amplifying circuit for a pickup cartridge |
Apr. 16, 1985 |
| 4510458 |
Amplifier circuit |
Apr. 9, 1985 |
| 4502017 |
Operational amplifier having frequency compensation |
Feb. 26, 1985 |
| 4495462 |
Current source test circuitry |
Jan. 22, 1985 |
| 4492882 |
Integrated circuit for chip op/amp interface |
Jan. 8, 1985 |
| 4491802 |
Wide-band amplifier system |
Jan. 1, 1985 |
| 4484148 |
Current source frequency compensation for a CMOS amplifier |
Nov. 20, 1984 |
| 4484146 |
Differential amplifier containing a low-pass filter |
Nov. 20, 1984 |
| 4480230 |
Large swing CMOS power amplifier |
Oct. 30, 1984 |
| 4476440 |
Cross coupled amplifier |
Oct. 9, 1984 |
| 4472689 |
Multi-purpose filter |
Sep. 18, 1984 |
| 4468628 |
Differential amplifier with high common-mode rejection |
Aug. 28, 1984 |
| 4468629 |
NPN Operational amplifier |
Aug. 28, 1984 |
| 4458212 |
Compensated amplifier having pole zero tracking |
Jul. 3, 1984 |
| 4454478 |
Gain-controlled amplifier |
Jun. 12, 1984 |
| 4438349 |
Hysteresis circuit having a stable output free from noise superposed on input signal |
Mar. 20, 1984 |
| 4430621 |
CMOS Polarity switch |
Feb. 7, 1984 |
| 4429283 |
Differential current amplifier |
Jan. 31, 1984 |
| 4422051 |
Gain control circuit |
Dec. 20, 1983 |
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