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Class Information
Number: 330/293
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including signal feedback means > Having negative feedback
Description: Subject matter wherein the signal feedback which is superimposed on the input signal has at least one component thereof opposite in phase to the input signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5341333 |
Circuits and methods for amplification of electrical signals |
Aug. 23, 1994 |
| 5317282 |
Tetrode biasing circuit |
May. 31, 1994 |
| 5311147 |
High impedance output driver stage and method therefor |
May. 10, 1994 |
| 5305469 |
Modem for telecommunication system with a reflection amplifier function |
Apr. 19, 1994 |
| 5256985 |
Current compensation technique for an operational amplifier |
Oct. 26, 1993 |
| 5256986 |
Circuit arrangement for amplifying weak sensor currents |
Oct. 26, 1993 |
| 5257285 |
Transimpedance pre-amplifier and a receiver including the pre-amplifier |
Oct. 26, 1993 |
| 5191297 |
Transconductance amplifier having sensfets which drive a load with linearly proportional current |
Mar. 2, 1993 |
| 5155449 |
FET buffer amplifier |
Oct. 13, 1992 |
| 5124667 |
Wideband amplifier having separate outputs |
Jun. 23, 1992 |
| 5121082 |
Buffer circuit |
Jun. 9, 1992 |
| 5121080 |
Amplifier with controlled output impedance |
Jun. 9, 1992 |
| 5087890 |
Amplifier circuit |
Feb. 11, 1992 |
| 5068624 |
Amplifier |
Nov. 26, 1991 |
| 5045810 |
Broadband amplifier with a constant gain and a determined input impedance at high frequency |
Sep. 3, 1991 |
| 5045808 |
Single-stage high-gain amplifier |
Sep. 3, 1991 |
| 5041797 |
Micro-power gain lattice |
Aug. 20, 1991 |
| 5017887 |
High frequency IC power amplifier |
May. 21, 1991 |
| 4841236 |
Current ratio device |
Jun. 20, 1989 |
| 4801893 |
Forward transimpedance amplifier |
Jan. 31, 1989 |
| 4786881 |
Amplifier with integrated feedback network |
Nov. 22, 1988 |
| 4785256 |
Non-linear amplifier |
Nov. 15, 1988 |
| 4775842 |
Multi-output feedback amplifier |
Oct. 4, 1988 |
| 4775843 |
Wideband post amplifier for product detector |
Oct. 4, 1988 |
| 4769588 |
Apparatus and method for providing a current exponentially proportional to voltage and directly proportional to temperature |
Sep. 6, 1988 |
| 4766396 |
Current source type current output circuit using current mirrors |
Aug. 23, 1988 |
| 4764732 |
Switchable mode amplifier for wide dynamic range |
Aug. 16, 1988 |
| 4758798 |
Output amplifier |
Jul. 19, 1988 |
| 4728905 |
High frequency, wide band, superlinear integrable amplifier and its method of fabrication |
Mar. 1, 1988 |
| 4628279 |
Wideband feedback amplifier |
Dec. 9, 1986 |
| 4628281 |
Feedback amplifier with reduced distortion |
Dec. 9, 1986 |
| 4612514 |
Feedback amplifier |
Sep. 16, 1986 |
| 4611179 |
Wide-band type high-frequency amplifier circuit |
Sep. 9, 1986 |
| 4594562 |
Amplifier with current-voltage conversion, particularly preamplifier of an optical receiver |
Jun. 10, 1986 |
| 4591800 |
Linear power amplifier feedback improvement |
May. 27, 1986 |
| 4591802 |
Feedback amplifier circuit including cascade connected field effect transistors |
May. 27, 1986 |
| 4577160 |
Method of and apparatus for low noise current amplification |
Mar. 18, 1986 |
| 4574253 |
Broadband control amplifier |
Mar. 4, 1986 |
| 4560948 |
Circuit for increasing voltage gain |
Dec. 24, 1985 |
| 4559501 |
Signal translating circuit |
Dec. 17, 1985 |
| 4554513 |
Replica circuit |
Nov. 19, 1985 |
| 4553108 |
Low noise feedback amplifier |
Nov. 12, 1985 |
| 4551685 |
Programmable gain feedback amplifier |
Nov. 5, 1985 |
| 4542350 |
Monolithic integrated circuit device including AC negative feedback type high frequency amplifier circuit |
Sep. 17, 1985 |
| 4539491 |
Voltage/current conversion circuit |
Sep. 3, 1985 |
| 4521737 |
Bipolar-MOS current amplifier having active turn-off circuitry |
Jun. 4, 1985 |
| 4518923 |
Preamplifier |
May. 21, 1985 |
| 4504797 |
Preamplifier circuits |
Mar. 12, 1985 |
| 4496908 |
Negative feedback amplifier having GaAs FET's |
Jan. 29, 1985 |
| 4496911 |
Integrated amplifier circuit |
Jan. 29, 1985 |
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