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