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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 |
| 4090150 |
High dynamic phase-accurate alternating voltage amplifier operating as a logarithmic amplifier for maintaining amplitude information |
May. 16, 1978 |
| 4084129 |
Voltage controlled variable gain circuit |
Apr. 11, 1978 |
| 4080577 |
Semiconductor integrated circuit |
Mar. 21, 1978 |
| 4074206 |
Linear output amplifier for charge-coupled devices |
Feb. 14, 1978 |
| 4066981 |
EMP Resistant oscillator with fiber optic frequency determining means |
Jan. 3, 1978 |
| 4065726 |
Negative feedback amplifier and lever shifter |
Dec. 27, 1977 |
| 4059811 |
Integrated circuit amplifier |
Nov. 22, 1977 |
| 4053847 |
Self-feedback type low-noise charge sensitive amplifier |
Oct. 11, 1977 |
| 4042887 |
Broad band amplifier |
Aug. 16, 1977 |
| 4039965 |
Audio frequency transistor amplifier |
Aug. 2, 1977 |
| 4039980 |
Voltage-controlled filter |
Aug. 2, 1977 |
| 4035738 |
Low noise amplifier |
Jul. 12, 1977 |
| 4034306 |
D.C. amplifier for use with low supply voltage |
Jul. 5, 1977 |
| 4027177 |
Clamping circuit |
May. 31, 1977 |
| 4025871 |
Audio amplifier for integrated circuit fabrication having controlled idling current |
May. 24, 1977 |
| 4025870 |
Low distortion amplifier having high slew rate and high output impedance |
May. 24, 1977 |
| 4023113 |
Voltage controlled filter |
May. 10, 1977 |
| 4023112 |
Broad band amplifier having negative feedback and a controllable amplification factor |
May. 10, 1977 |
| 4021751 |
Field effect transistor amplifier |
May. 3, 1977 |
| 4020450 |
Towed hydrophone preamplifier and receiver |
Apr. 26, 1977 |
| 4013971 |
Integrated amplifier |
Mar. 22, 1977 |
| 4001703 |
Transmission line interface circuit |
Jan. 4, 1977 |
| 3996462 |
Solid-state current transformer |
Dec. 7, 1976 |
| 3986133 |
Wide-band transistor amplifier |
Oct. 12, 1976 |
| 3979687 |
Line amplifier |
Sep. 7, 1976 |
| 3970949 |
High-frequency automatic gain control circuit |
Jul. 20, 1976 |
| 3970953 |
Distortion-free amplifiers |
Jul. 20, 1976 |
| 3967208 |
Amplifying integrated circuit in the MOS technology |
Jun. 29, 1976 |
| 3955047 |
D.C. reinsertion in video amplifier |
May. 4, 1976 |
| 3955147 |
Amplifier circuit |
May. 4, 1976 |
| 3947645 |
Demultiplexer for FM stereophonic receivers |
Mar. 30, 1976 |
| 3947704 |
Low resistance microcurrent regulated current source |
Mar. 30, 1976 |
| 3944943 |
Broadband amplifier |
Mar. 16, 1976 |
| 3936720 |
Half-wave rectifier circuit |
Feb. 3, 1976 |
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