| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 03/29/2007 | US20070069814 Self-oscillating driver circuit |
| 03/29/2007 | US20070069812 Input/output signals preserver circuit of amplification circuits |
| 03/29/2007 | DE102006016308A1 Signalverarbeitungsschaltung für eine analoge Eingabe Signal processing circuit for an analog input |
| 03/29/2007 | DE102005045437A1 Amplifying circuit for e.g. lambda sensor, has operational amplifier, metal-oxide semiconductor field-effect transistor, multiplier, voltage dividers, resistors provided for adjusting voltage offset of output voltage based on input voltage |
| 03/29/2007 | DE102005041052B3 Verfahren zur Stabilitätskontrolle einer selbstschwingenden Treiberschaltung und selbstschwingende Treiberschaltung Method for Stability control a self-oscillating driver circuit and self-oscillating driver circuit |
| 03/28/2007 | EP1768254A1 High output amplifier |
| 03/28/2007 | EP1766908A1 Receiver for a differential data bus |
| 03/28/2007 | EP1766907A1 Apparatus for receiving a differential signal using a differential amplifier |
| 03/28/2007 | EP1766777A2 Improved integrated circuit implementation for power and area efficient adaptive equalization |
| 03/28/2007 | EP1766774A2 Power amplifier utilizing high breakdown voltage circuit topology |
| 03/28/2007 | EP1766773A1 Power source and method for controlling operational power |
| 03/28/2007 | EP1338086B1 Amplifier circuit, an optical communication system and a method of controlling amplification |
| 03/28/2007 | CN2884678Y Driver element circuit of special large power high frequency switching power source for power magnification |
| 03/28/2007 | CN1938942A Power amplifier unit, communication terminal and control method of power amplifier unit |
| 03/28/2007 | CN1938941A 数字传声器 Digital Microphone |
| 03/28/2007 | CN1938940A High-efficiency amplifier |
| 03/28/2007 | CN1938742A Organic el driver circuit and organic el display device |
| 03/28/2007 | CN1938597A Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit |
| 03/28/2007 | CN1937416A Altering transmit power amplifier characteristics according to input signal characteristics |
| 03/28/2007 | CN1937402A Speaker protection circuit |
| 03/28/2007 | CN1307795C An improved differential inverter |
| 03/28/2007 | CN1307791C Changeable power amplifier |
| 03/28/2007 | CN1307790C Method and apparatus for error compensation in hybrid matrix amplification system |
| 03/28/2007 | CN1307789C High-frequency amplifier circuit with negative impedance cancellation |
| 03/28/2007 | CN1307788C Transmission line tuning switch power amplifier |
| 03/28/2007 | CN1307787C Gain variable amplifier |
| 03/28/2007 | CN1307786C Power amplifying circuit and method for supplying power by multiple required power output level |
| 03/28/2007 | CN1307637C Booster circuit |
| 03/27/2007 | USRE39527 Method and apparatus for measuring a low power signal |
| 03/27/2007 | US7196586 Oscillator amplifier circuit operable to provide symmetric current limiting and method of same |
| 03/27/2007 | US7196585 Fast-response current limiting |
| 03/27/2007 | US7196584 Amplifier circuit |
| 03/27/2007 | US7196581 Amplifier switching control circuit and method for current shunt instrumentation amplifier having extended position and negative input common mode range |
| 03/27/2007 | US7196580 Digital audio amplifier including phase lead-lag compensator for increasing self-oscillation frequency |
| 03/27/2007 | US7196579 Gain-controlled amplifier, receiver circuit and radio communication device |
| 03/27/2007 | US7196578 Amplifier memory effect compensator |
| 03/27/2007 | US7196577 Amplifier with capacitor selection |
| 03/27/2007 | US7196576 Method and apparatus for control of predistortion linearizer based on power series |
| 03/27/2007 | US7196575 Polyphase impedance transformation amplifier |
| 03/27/2007 | US7196568 Input circuit, display device and information display apparatus |
| 03/27/2007 | US7196565 DC level wandering cancellation circuit |
| 03/27/2007 | US7196495 Dual battery and monitor arrangement |
| 03/27/2007 | US7196310 Light receiving device for optical communication system |
| 03/27/2007 | US7196307 Optical sensor, method of reading optical sensor, matrix-type optical sensor circuit, and electronic apparatus |
| 03/27/2007 | CA2360345C An amplifier circuit for correction of interference in the output signal |
| 03/22/2007 | WO2007002770A3 Methods and apparatus for implementing and using amplifiers for performing various amplification related operations |
| 03/22/2007 | US20070067135 Configurable voltage regulator |
| 03/22/2007 | US20070067090 Analog input signal processing circuit |
| 03/22/2007 | US20070063773 Method and apparatus for reducing ripple in class d amplifiers |
| 03/22/2007 | US20070063766 High-frequency amplifier |
| 03/22/2007 | US20070063765 Power control and modulation of switched-mode power amplifiers with one or more stages |
| 03/22/2007 | US20070063764 Class ad audio amplifier |
| 03/22/2007 | US20070063742 Secure and fast calculating unit |
| 03/22/2007 | DE102006030820A1 Differenzierende Superpositionsschaltung zur Linearisierung Differentiating superposition circuitry for linearization |
| 03/22/2007 | DE102005044710A1 Rückkopplungskorrektur für Schaltverstärker Feedback correction for amplifier |
| 03/21/2007 | EP1764915A1 Spatially-fed high power amplifier with shaped reflectors |
| 03/21/2007 | EP1764914A1 Low noise selective differential amplifier |
| 03/21/2007 | EP1764624A2 Transmitting-receiving module of radar system |
| 03/21/2007 | EP1763922A1 Amplifier circuit with automatic gain correction |
| 03/21/2007 | EP1349267B1 Amplifier circuit for am broadcasing |
| 03/21/2007 | CN2882117Y Professional power amplification assembly |
| 03/21/2007 | CN2882116Y Radio frequency predistortion power amplifier |
| 03/21/2007 | CN1934794A Signal repeater system |
| 03/21/2007 | CN1934784A Adaptive bias current circuit for amplifiers and method for producing same |
| 03/21/2007 | CN1934783A Signal output circuit, audio signal output apparatus using the same, and electronic device |
| 03/21/2007 | CN1933324A 差动式运算放大器 Differential operational amplifier |
| 03/21/2007 | CN1306701C DC offset cancellation circuit, differential amplification circuit, photo-electric pulse conversion circuit |
| 03/21/2007 | CN1306700C Pulse shaping circuit, pulse generating circuit and photo-electric pulse conversion circuit |
| 03/21/2007 | CN1306696C Variable time constant circuit and filter circuit using it |
| 03/21/2007 | CN1306667C Laser power control circuit |
| 03/20/2007 | US7194097 Audio control device |
| 03/20/2007 | US7193478 Signal transmission in opto-electronic devices by moving the quiescent component of a differential signal |
| 03/20/2007 | US7193477 Concurrent triple-band gain amplifier for multi-standard coexist communications |
| 03/20/2007 | US7193476 Integrated circuit |
| 03/20/2007 | US7193475 Single-ended input to differential output low noise amplifier with a cascode topology |
| 03/20/2007 | US7193473 High power Doherty amplifier using multi-stage modules |
| 03/20/2007 | US7193472 Power amplifier |
| 03/20/2007 | US7193471 High frequency power amplifier circuit and radio communication system |
| 03/20/2007 | US7193469 System and method for testing gate oxide of an amplifier |
| 03/20/2007 | US7193468 Active load circuit for low-voltage CMOS voltage gain amplifier with wide bandwidth and high gain characteristic |
| 03/20/2007 | US7193467 Differential amplifiers and methods of using same |
| 03/20/2007 | US7193466 Operational transconductance amplifier with DC offset elimination and low mismatch |
| 03/20/2007 | US7193465 Variable gain amplifier capable of functioning at low power supply voltage |
| 03/20/2007 | US7193464 Differential amplifier with large input common mode signal range |
| 03/20/2007 | US7193463 Driver circuit |
| 03/20/2007 | US7193458 Power supply for guitar amplifier |
| 03/20/2007 | US7193457 Current-mode instrumentation amplifier gain error correction circuitry |
| 03/20/2007 | US7193452 Temperature-compensated bias circuit for power amplifier |
| 03/20/2007 | US7193448 Wide dynamic range operational amplifier |
| 03/20/2007 | US7193447 Differential sense amplifier latch for high common mode input |
| 03/20/2007 | US7193201 Method for measuring external light to control protection means against sunlight or illumination |
| 03/15/2007 | WO2007030628A2 Longitudinal balance measuring bridge circuit |
| 03/15/2007 | WO2007030164A2 Linear commutating amplifier |
| 03/15/2007 | WO2007029737A1 Balanced amplifier, and electronic circuit |
| 03/15/2007 | WO2007028897A1 Device for amplifying a voltage representing a sound amplifying information |
| 03/15/2007 | WO2006118645A3 Methods and apparatus for precision limiting in transimpedance amplifiers |
| 03/15/2007 | US20070058711 Recovery from clipping events in a class d amplifier |
| 03/15/2007 | US20070057741 Method and apparatus for effecting high-frequency amplification or oscillation |
| 03/15/2007 | US20070057732 OTA-Based High-Order Filters |
| 03/15/2007 | US20070057731 On-chip harmonic termination for RF power amplifier applications |