Patents for H03L 5 - Automatic control of voltage, current, or power (2,970) |
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04/09/1997 | CN1147168A Synchronous transmission phase modulating system for bottle making machine |
03/19/1997 | EP0474729B1 Voltage control oscillator with automatic current control |
10/02/1996 | EP0735690A2 Circuit for controlling power of radio apparatuses |
07/04/1996 | WO1996020535A1 Lamp oscillator for atomic frequency standards |
06/11/1996 | US5525922 Automatic gain and level control circuit and method |
05/30/1996 | WO1996016471A1 CURRENT-CONTROLLED QUADRATURE OSCILLATOR BASED ON DIFFERENTIAL gm/C CELLS |
05/22/1996 | EP0713288A2 Radio frequency detector circuit |
05/07/1996 | US5515011 Pulsed magnetron circuit with phase locked loop |
04/17/1996 | EP0645057A4 Variable frequency ultrasonic generator with constant power output. |
02/06/1996 | US5489878 Current-controlled quadrature oscillator based on differential gm /C cells |
02/06/1996 | US5489821 Lamp oscillator for atomic frequency standards |
02/01/1996 | DE4426067A1 Oscillator amplifier with oscillator transistor(s) |
01/24/1996 | CN1115489A Current signal correction process and device |
10/25/1995 | EP0678960A1 Method and apparatus for correcting a current signal |
03/29/1995 | EP0645057A1 Variable frequency ultrasonic generator with constant power output |
06/21/1994 | US5323329 Digitally assisted power levelling circuit for rf power generator |
06/09/1994 | WO1994012921A1 Digital voltage regulator having capacitance selector |
06/08/1994 | EP0600802A1 RF generator with variable and regulated output power |
04/12/1994 | US5302921 Piezoelectric oscillator having reduced radiation of higher harmonics |
04/07/1994 | DE4233467A1 HF surgical appts. with load dependent performance control - has feed source controlled by combination of negative and positive feedback of electrode voltage and current |
03/29/1994 | US5298869 Constant current and constant voltage regulating circuit for common-gate or common-base transistor devices |
03/08/1994 | US5293137 Digital transducer system including two reactive transducers forming resonant oscillator circuits |
02/15/1994 | US5286941 High frequency heating generator having an improved matching network between a tetrode amplifier and a resonant circuit |
01/04/1994 | US5276376 Variable frequency ultrasonic generator with constant power output |
12/23/1993 | WO1993026054A1 Variable frequency ultrasonic generator with constant power output |
12/09/1993 | WO1993024992A1 Digital transducer system |
10/20/1993 | EP0566343A2 Integrated circuit for transducers |
09/23/1993 | DE4208669A1 Adjusting ultrasonic generator to different loads - carrying out automatic impedance adjustment between generator and load by variable inductance |
09/21/1993 | CA2063404C Voltage control oscillator with automatic current control |
09/14/1993 | US5245660 System for producing synchronized signals |
06/30/1993 | EP0549479A1 Digitally assisted power levelling circuit for RF power generator |
04/08/1993 | DE4132920A1 Circuit for low-noise amplitude HF oscillator - has bipolar transistor with high boundary frequency, operated in base circuit at low currents |
03/03/1993 | EP0529874A1 Vector locked loop |
02/24/1993 | EP0474729A4 Voltage control oscillator with automatic current control |
02/23/1993 | US5189380 Integrated circuit for transducers |
02/09/1993 | US5185585 Crystal oscillator and method with amplitude and phase control |
01/21/1993 | DE4122624A1 Protection or HF generator feeding plasma generating consumer - has control circuit activating HF generator for reception of detector circuit output signal |
01/14/1993 | DE4122091A1 H.F. generator circuit for medical short wave therapy appts. - has quartz oscillator, level regulator and two power amplifiers for level control via OR gate |
01/07/1993 | EP0521653A2 Gain control amplifier |
01/07/1993 | EP0521652A2 Frequency multiplier |
01/05/1993 | US5177453 Gain control amplifier |
12/23/1992 | EP0516617A4 High speed reflected impedance telemetry system for implantable device |
12/09/1992 | EP0516617A1 High speed reflected impedance telemetry system for implantable device |
09/22/1992 | US5150081 Integrated crystal oscillator with circuit for limiting crystal power dissipation |
09/08/1992 | US5146224 Ac signal generating apparatus for voltage and current standard |
09/02/1992 | EP0501620A1 Wideband oscillator with bias compensation |
09/01/1992 | US5144263 Method for amplitude control of an oscillator output signal, and circuit configuration for performing the method |
07/22/1992 | EP0495699A1 High-frequency heating generator |
07/21/1992 | US5132632 Frequency multiplier |
06/16/1992 | CA1303674C High frequency power generator |
05/12/1992 | US5113157 High-frequency electron tube power oscillator |
04/14/1992 | US5105168 Vector locked loop |
03/25/1992 | CN1016035B Voltage control oscillator with automatic current control |
03/18/1992 | EP0474729A1 Voltage control oscillator with automatic current control. |
03/17/1992 | US5097228 Wideband oscillator with bias compensation |
03/11/1992 | CN1015850B Double ring automatic power level control circuit for transmitter |
01/21/1992 | US5083097 Adaptive control system for pulsed megawatt klystrons |
01/14/1992 | US5081603 Amplitude-control system for a signal generator |
12/27/1991 | EP0462304A1 Arrangement for the amplitude regulation of an oscillator |
11/06/1991 | EP0455296A1 High-frequency electron tube power oscillator |
11/05/1991 | US5063358 Ultra low noise crystal oscillator circuit |
10/31/1991 | WO1991016696A1 High speed reflected impedance telemetry system for implantable device |
09/10/1991 | US5047734 Linear crystal oscillator with amplitude control and crosstalk cancellation |
07/24/1991 | EP0437785A2 AC signal generating apparatus for generating a voltage or current standard |
06/13/1991 | DE3940295A1 High frequency transmitter with controlled output power - uses switched digital reference level to control output power |
03/21/1991 | WO1991003877A1 Adaptive control system for pulsed megawatt klystrons |
03/12/1991 | US4999588 Integratable amplitude-regulated oscillator circuit |
02/13/1991 | CN1011649B Low distortion oscillator |
12/12/1990 | EP0401545A1 Power control arrangement |
12/12/1990 | CN1047773A Voltage control oscillator with automatic current control |
12/03/1990 | WO1990015484A1 Voltage control oscillator with automatic current control |
11/06/1990 | US4968952 Voltage control oscillator with automatic current control |
09/05/1990 | EP0384938A1 Integrable amplitude-controllable oscillator |
08/23/1990 | DE3904558A1 Radio-frequency generator with automatic power control for radio-frequency surgery |
08/07/1990 | US4947139 Very low input power oscillator with improved amplitude stability |
07/04/1990 | CN1043593A Double ring outomatic power level control circuit for transmitter |
06/12/1990 | US4933972 Stereo multiplex demodulator |
03/22/1990 | DE3831176A1 Oscillator cell |
02/13/1990 | US4901038 Low-noise oscillator using superconducting nonlinear element |
02/13/1990 | US4901037 Oscillator with amplitude stabilizing circuit |
01/03/1990 | EP0349237A2 A stereo multiplex demodulator |
12/26/1989 | US4890073 High frequency generator for use with loads subject to great impedance variations |
12/19/1989 | US4888565 Apparatus for generating ultrasonic signals |
09/27/1989 | EP0333804A1 Signal source for use with an lc tank circuit |
08/30/1989 | EP0329988A2 High frequency power generator |
07/11/1989 | US4847567 Monolithically integrable, amplitude-controllable oscillator amplifier circuit |
07/05/1989 | EP0323314A1 Low-noise oscillator |
06/27/1989 | US4843348 Monolithically integrable, amplitude-controllable oscillator amplifier circuit |
06/27/1989 | US4843340 Monolithically integrable controller circuit |
05/23/1989 | US4833427 Signal source for use with an LC tank circuit |
04/20/1989 | WO1989003617A1 Signal source for use with an lc tank circuit |
04/11/1989 | US4820891 Induction heated cooking apparatus |
04/04/1989 | US4818954 High-frequency generator with automatic power-control for high-frequency surgery |
03/28/1989 | US4816779 Amplitude stabilized oscillator having positive and negative feedback |
03/22/1989 | EP0307988A1 Oscillator circuit comprising an amplitude controller |
03/07/1989 | US4810922 Damping decoupled oscillator using a high impedance crystal |
02/01/1989 | EP0301319A1 Monolithically integrable, amplitude-controlled oscillator-differential amplifier circuit |
01/18/1989 | EP0299464A1 Monolithically integrable, amplitude-controllable oscillator-amplifier |
01/18/1989 | EP0299215A1 Monolithically integrable control circuit |
01/03/1989 | US4795988 Low distortion oscillator |