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Class Information
Number: 330/251
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including class d amplifier
Description: Subject matter including an amplifier which utilizes switching-mode techniques.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619469 |
Current switched circuit for switch mode power amplifiers |
Nov. 17, 2009 |
| 7619470 |
Power amplifier |
Nov. 17, 2009 |
| 7619471 |
Class D amplifier with increased efficiency |
Nov. 17, 2009 |
| 7619480 |
Distributed class G type amplifier switching method |
Nov. 17, 2009 |
| 7612608 |
Sigma-delta based Class D audio or servo amplifier with load noise shaping |
Nov. 3, 2009 |
| 7609110 |
Filterless class-D speaker driver with less switching |
Oct. 27, 2009 |
| 7605653 |
Sigma-delta based class D audio power amplifier with high power efficiency |
Oct. 20, 2009 |
| 7602245 |
Method, apparatus and system for reducing DC coupling capacitance at switching amplifier |
Oct. 13, 2009 |
| 7592844 |
Comparator with complementary differential input stages |
Sep. 22, 2009 |
| 7589590 |
Circuit architecture having differential processing for use in half bridges and full bridges and methods therefore |
Sep. 15, 2009 |
| 7586099 |
Vacuum plasma generator |
Sep. 8, 2009 |
| 7586369 |
Pulse modulation type electric power amplifier |
Sep. 8, 2009 |
| 7586370 |
Class D amplifier |
Sep. 8, 2009 |
| 7579908 |
Digital audio amplifiers, electronic systems, and methods |
Aug. 25, 2009 |
| 7579910 |
Low distortion switching amplifier circuits and methods |
Aug. 25, 2009 |
| 7576605 |
Low power output stage |
Aug. 18, 2009 |
| 7576606 |
Digital PWM amplifier having a low delay corrector |
Aug. 18, 2009 |
| 7573330 |
High efficiency digital power amplifier |
Aug. 11, 2009 |
| 7573328 |
Power amplifier |
Aug. 11, 2009 |
| 7570118 |
Thermal overload protection circuit and method for protecting switching power amplifier circuits |
Aug. 4, 2009 |
| 7560985 |
Two-stage amplification using intermediate non-linear square wave |
Jul. 14, 2009 |
| 7557650 |
Electronic signal generator with modulated cyclic ratio, compensated for variations in its power supply voltage |
Jul. 7, 2009 |
| 7557660 |
Power amplification device |
Jul. 7, 2009 |
| 7554390 |
Method and system for transitioning between operation states in an output system |
Jun. 30, 2009 |
| 7554409 |
Over-current protection circuit and method for protecting switching power amplifier circuits |
Jun. 30, 2009 |
| 7554398 |
Integration improvement technique for switching amplifiers |
Jun. 30, 2009 |
| 7554399 |
Protection circuit and method for protecting switching power amplifier circuits during reset |
Jun. 30, 2009 |
| 7551022 |
Power supply compensation |
Jun. 23, 2009 |
| 7551028 |
Signal generators for current-mode three-level digital amplifiers |
Jun. 23, 2009 |
| 7548112 |
Switch mode power amplifier using MIS-HEMT with field plate extension |
Jun. 16, 2009 |
| 7548110 |
Power amplifier and method for reducing common noise of power amplifier |
Jun. 16, 2009 |
| 7545212 |
Class ad audio amplifier |
Jun. 9, 2009 |
| 7545207 |
Control circuit and method for a switching amplifier |
Jun. 9, 2009 |
| 7541869 |
Feedback amplifier |
Jun. 2, 2009 |
| 7538611 |
Audio amplifier with high power and high efficiency |
May. 26, 2009 |
| 7535296 |
Class-E radio frequency power amplifier with feedback control |
May. 19, 2009 |
| 7528653 |
Class-D amplifier with noise-immunity feedback |
May. 5, 2009 |
| 7528657 |
Baseband filter start-up circuit |
May. 5, 2009 |
| 7528662 |
Signal amplification apparatus and signal amplification method |
May. 5, 2009 |
| 7525378 |
Circuit for reducing crosstalk |
Apr. 28, 2009 |
| 7518442 |
Circuit and method for suppressing switching and supply-related errors in a PWM power stage by instantaneous per-pulse feedback |
Apr. 14, 2009 |
| 7518451 |
High efficiency switch-mode power amplifier |
Apr. 14, 2009 |
| 7518450 |
Digital amplifier |
Apr. 14, 2009 |
| 7515646 |
Method and apparatus for reducing EMI emissions for data signals traveling over a data pathway |
Apr. 7, 2009 |
| 7501889 |
Method and apparatus for implementing soft switching in a class D amplifier |
Mar. 10, 2009 |
| 7498879 |
Summing comparator for higher order class D amplifiers |
Mar. 3, 2009 |
| 7498880 |
Class L amplifier |
Mar. 3, 2009 |
| 7498881 |
Switching audio power amplifier and method for pop noise suppression |
Mar. 3, 2009 |
| 7495509 |
Audio power amplifier |
Feb. 24, 2009 |
| 7492220 |
Methods for controlling power stage of power amplifier and related apparatuses |
Feb. 17, 2009 |
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