Patents
Patents for H03K 7 - Modulating pulses with a continuously-variable modulating signal (4,039)
09/1987
09/09/1987EP0235911A2 Level detecting waveform sampling system
09/09/1987EP0235899A2 Predictive time base control circuit for a waveform sampling system
09/09/1987EP0235441A2 Triggered frequency locked oscillator
09/02/1987EP0234936A2 AM radio transmitter
09/01/1987US4691330 Duty control circuit for gradually reducing the duty time
08/1987
08/25/1987US4689802 Digital pulse width modulator
08/19/1987EP0232764A2 Circuit arrangement for controlling the longitudinal switch member of a switching current power supply apparatus
08/19/1987EP0232451A1 Method and device for the conversion of an electrical signal into a proportional frequency
08/19/1987CN87100875A Method and apparatus for converting electrical signal into proportional frequency
06/1987
06/23/1987US4675588 Electrical power control apparatus
06/10/1987EP0224488A1 Analog to duty cycle converter
06/04/1987WO1987003434A1 Method and apparatus for encoding and transmitting signals
06/03/1987EP0223812A1 Phase modulators
05/1987
05/27/1987EP0222999A2 Digital-to-Analog converter with output sampler
05/13/1987EP0221740A2 Servo data demodulators
05/13/1987EP0221402A1 Analog-to-frequency converter
04/1987
04/15/1987EP0218326A2 DC-DC impedance transformer for a sample and hold circuit
04/15/1987EP0218288A2 MOS power device usable both as an N-chanel MOS transistor and as a P-channel MOS transistor
04/08/1987EP0217284A2 Sample-and-hold circuit
03/1987
03/17/1987US4651114 Pulse repetition modulator apparatus
03/17/1987US4651027 Current-to-frequency converter
03/03/1987US4647905 Improved pulse-width-modulation signal converter
02/1987
02/24/1987US4646321 Interpolation pulse duration modulated adder
02/24/1987US4646030 Triggered frequency locked oscillator having programmable delay circuit
01/1987
01/27/1987US4639619 Electronic sampler switch
01/20/1987US4638191 Amplitude insensitive delay line
01/13/1987CA1216639A1 Voltage controlled pulse width modulation circuit
01/07/1987EP0207291A2 Voltage/frequency converter
01/06/1987US4635002 Metal oxide semiconductor logarithmic voltage controlled oscillator
01/06/1987US4634993 High gain, low drift operational amplifier for sample and hold circuit
01/06/1987US4634892 Pulse width modulator circuit for switching regulators
01/06/1987US4634126 Device for converting the amount of a mechanical displacement into electrical signal
12/1986
12/30/1986US4633308 Amplitude insensitive delay lines in an accoustic imaging system
12/30/1986US4633222 Clock shaping circuit and method
12/18/1986WO1986007509A1 Analog to duty cycle converter
12/16/1986US4630294 Digital sample rate reduction system
12/10/1986CN85104529A Treatment pulse sequences for a transcutaneous nerve stimulation device
12/09/1986US4628475 Pulse width modulation pulse generator
12/04/1986WO1986007219A1 Phase modulators
12/02/1986US4626715 MOS FET amplifier output stage
11/1986
11/18/1986US4623800 Clock controlled dual slope voltage to frequency converter
11/05/1986EP0200402A2 Sample and hold circuit
10/1986
10/15/1986CN85102794A Directly analog-pulse width modulation circuit
10/07/1986US4616332 Apparatus for converting analog-format signals to pulse-format signals
09/1986
09/30/1986US4614918 Frequency generator with digitally controlled phase modulation
09/23/1986US4613974 Method and system for modulating a carrier signal
09/16/1986US4612463 Interface circuit
07/1986
07/29/1986US4603425 Interpolation pulse duration modulation circuit
07/29/1986CA1208706A1 Charge balance voltage-to-frequency converter utilizing cmos circuitry
07/22/1986US4602223 High rate modulator/demodulator for digital signals amplitude modulated on digital data
07/08/1986US4599548 PWM controller for an electrical load
06/1986
06/11/1986EP0184280A1 Frequency-stabilized two-state modulation
06/11/1986EP0183849A1 Control circuit that operates on pulse-width modulated signals
06/10/1986US4594578 One shot pulse width modulating converter
05/1986
05/27/1986US4591810 Pulse width modulator for electronic watthour metering
05/21/1986EP0181488A2 Controller for generating a pair of mutually exclusive pulse train signals
05/06/1986US4587443 Auto-zero sample and hold circuit
04/1986
04/22/1986US4584691 Timed pulse communication system
04/22/1986US4584488 Controller for generating a pair of mutually exclusive pulse train signals
04/02/1986EP0176114A2 Auto-zero sample and hold circuit
03/1986
03/18/1986US4577154 Pulse width modulation circuit and integration circuit of analog product using said modulation circuit
03/12/1986EP0036424B1 Circuit arrangement for an asynchronous motor drive with variable speed
02/1986
02/18/1986CA1200855A1 Modulator for the transmission of analog data
02/18/1986CA1200853A1 Current to frequency converter
02/12/1986EP0171022A2 Signal delay device
02/11/1986US4570131 PLL circuit with selectable current charging
01/1986
01/28/1986US4567466 Sensor communication system
01/28/1986CA1199975A2 Methods and apparatus for transmitting high-bit-rate digital data in power line communication media having harmonic noise content
01/08/1986EP0167157A2 Delay circuit
12/1985
12/24/1985US4560938 Fail-passive driver circuit
12/17/1985CA1198176A1 Triangle wave generator
12/03/1985CA1197573A1 Analog signal comparator using digital circuitry
11/1985
11/26/1985CA1197321A1 Digital phase comparator with improved sensitivity for small phase differences
11/26/1985CA1197290A1 Soliton sampler
11/21/1985EP0161760A1 Electromechanical displacement transducer
10/1985
10/29/1985US4550308 Signal converting apparatus
10/22/1985US4549151 Pulse width modulator circuit with thermal breakdown prevention
10/22/1985US4549149 Current to frequency converter switched to increased frequency when current input low
10/16/1985EP0158425A1 Electrical power control apparatus
10/08/1985CA1194940A1 Voltage to frequency converters
09/1985
09/26/1985WO1985004293A1 Control circuit that operates on pulse-width modulated signals
09/24/1985CA1194237A1 Analog-to-digital converter
09/24/1985CA1194156A1 Phase-locked loop with d.c. modulation capability
09/10/1985US4540902 Sample and hold circuit
09/03/1985CA1192948A1 Sample and hold circuit
08/1985
08/06/1985US4533840 Soliton sampler
07/1985
07/30/1985US4532435 Pulse width modulator having nonlinear transfer function
07/24/1985EP0149577A2 Method for converting an analog signal into a pulse signal and inverse conversion method, conversion apparatus for implementing these methods, transmission systems and control and regulation systems comprising such apparatus
07/23/1985US4531096 Pulse-width modulation circuit
07/17/1985EP0148296A1 Method and circuit for converting a measuring current into an impulse rate proportional to the measuring current
06/1985
06/19/1985EP0145038A2 Electronic circuits and signal generator using them
06/18/1985US4524335 Pulse-width modulation circuit with carrier signal frequency control
05/1985
05/28/1985US4520311 Current to pulse-sequence transducer
05/22/1985EP0141925A1 Circuit for the suppression of retarding field oscillations in electronic tubes, especially for a pulse duration modulation stage of a transmitter system
05/21/1985US4518948 Analog-to-digital converter
05/07/1985US4516086 Frequency modulator for the transmission of analog data
05/07/1985US4516038 Triangle wave generator
04/1985
04/25/1985WO1985001847A1 Current-impulse converter circuit with variable time constant
04/02/1985US4508975 Pulse duration modulator using charge coupled devices
03/1985
03/26/1985US4507624 Voltage-to-frequency converters
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