Patents
Sitemap › H03 - Basic electronic circuitry › H03K - Pulse technique › H03K 17 - Electronic switching or gating, i.e. not by contact-making and -breaking
Patents for H03K 17 - Electronic switching or gating, i.e. not by contact-making and -breaking (53,158)
10/1991
10/15/1991US5057694 Optoelectronic relay circuit having charging path formed by a switching transistor and a rectifying diode
10/15/1991US5057683 Error preventive circuit for a photoelectric switch
10/10/1991DE4011193A1 Current supply monitoring in PCM system - has opto-coupler between switch transistor and thyristor monitor activating signal device
10/09/1991EP0450750A2 Lockproof low level oscillator using digital components
10/09/1991EP0450306A1 High-speed diode and method for producing the same
10/09/1991EP0349557B1 Gate circuit with mos transistors
10/09/1991CN2086480U Touching switch
10/09/1991CN2086479U Sound control saving delay switch
10/09/1991CN2086468U Energy-saving sound and light control electronic lamp holder (base)
10/09/1991CN1055268A Automatic electronic switch
10/09/1991CN1055267A Time relay circuit
10/09/1991CN1014286B Improved power supply for totem pole power switches
10/08/1991US5055991 Lossless snubber
10/08/1991US5055990 Snubber circuit for power conversion semiconductor elements and assembly thereof
10/08/1991US5055836 Wideband solid-state analog switch
10/08/1991US5055762 Current controlled full wave transitor bridge inverter for a multiple phase AC machine
10/08/1991US5055723 Jfet analog switch with gate current control
10/08/1991US5055722 Gate drive for insulated gate device
10/08/1991US5055721 Drive circuit for igbt device
10/08/1991US5055714 Undershoot reduction circuit
10/08/1991US5055713 Output circuit of semiconductor integrated circuit
10/08/1991US5055708 Circuit for driving an inductive load
10/08/1991US5055705 Selecting one of a plurality of voltages without overlap
10/08/1991US5055668 Photo-sensor cell suitable for IC chip
10/08/1991CA1290408C Microwave tube modulator
10/03/1991WO1991015058A1 Short-circuit resistant transistor final stage, in particular ignition final stage for motor vehicles
10/03/1991WO1991015055A1 Microwave field effect device
10/03/1991WO1991015052A1 Voltage multiplier circuit
10/03/1991CA2035645A1 Lockproof low level oscillator using digital components
10/02/1991EP0449632A2 Matrix switcher apparatus
10/02/1991EP0449623A2 Integrated circuit device for RS-232C line receiver
10/02/1991EP0449441A1 Antisaturation circuit for a bipolar transistor
10/02/1991EP0448826A2 Keyboard
10/02/1991CN2086020U Double-delay ic time relay
10/01/1991US5054001 Transistor breakdown protection circuit
10/01/1991US5053994 Method and apparatus for applying a potential difference across a selected region of a substrate
10/01/1991US5053653 JFET analog switch with gate current control
10/01/1991US5053646 Programmable logic device having expanded logic capability
10/01/1991US5053645 Threshold logic circuit
10/01/1991US5053643 Integrated circuit including output circuit having input logic controlled by output logic
10/01/1991US5053616 Photoelectric array detection circuitry with dual gating means
10/01/1991CA1290045C Broadband signal switching equipment
10/01/1991CA1290044C Broadband signal switching equipment
09/1991
09/27/1991CA2036925A1 Hybrid switch with solid-state condition
09/26/1991DE4009304A1 Kurzschlussfeste transistorendstufe, insbesondere zuendungsendstufe fuer kraftfahrzeuge Short-circuit proof transistor output stage, in particular zuendungsendstufe for motor vehicles
09/25/1991EP0447989A2 High speed driving circuit for MOSFET transistors
09/25/1991EP0447449A1 Means and method for measuring inductance.
09/25/1991EP0152414B1 A driver circuit
09/25/1991CN1054864A 磁动机 Magnetic motive
09/24/1991US5051789 Device having two optical ports for switching applications
09/24/1991US5051671 Proximity sensor and control
09/24/1991US5051623 TTL tristate circuit for output pulldown transistor
09/24/1991US5051618 High voltage system using enhancement and depletion field effect transistors
09/24/1991US5051613 Low voltage DC one-shot circuit
09/24/1991US5051612 Prevention of parasitic mechanisms in junction isolated devices
09/24/1991US5051611 Power-up circuit with hysteresis for an output buffer
09/24/1991US5051609 Simplified driver circuit for solid-state power switches
09/24/1991US5051603 Method and apparatus for matching turn-off times of parallel connected semiconductor switching devices
09/24/1991US5051574 Optical coordinate detection apparatus
09/24/1991CA1289631C Self-biased, high-gain differential amplifier with feedback
09/22/1991WO1991015060A1 High speed logic and memory family using ring segment buffer
09/22/1991CA2078778A1 High speed logic and memory family using ring segment buffer
09/18/1991EP0446908A2 High speed opto-electronic crossbar switch
09/18/1991EP0446642A1 Device for switch electric appliances
09/18/1991CN2085131U Automatic lighting switch for corridor
09/18/1991CN2085129U Automatic controllor for corridor lamp
09/18/1991CN2085128U Universal lighting controllor
09/18/1991CN2085115U Contact-type door bell and lamp switch
09/18/1991CN1054684A Circuit for reversing magnetic field
09/18/1991CN1014012B Current source technology
09/17/1991US5049971 Monolithic high-frequency-signal switch and power limiter device
09/17/1991US5049763 Anti-noise circuits
09/17/1991CA2038077A1 Medium voltage static switch
09/17/1991CA1289182C Refrigerator ice dispenser light with photosensitive switch
09/12/1991DE4007564A1 MOSFET power amplifier for inductive loads - uses symmetrical bridge circuit with balancing inductors and free wheeling diodes
09/12/1991DE4007539A1 Control circuit for power semiconductor switch - uses pulse transformer to control power switch and register overcurrent and undervoltage conditions
09/12/1991DE4006893A1 Digitally adjustable electrical circuitry - uses micro-controller and memory to alter analog characteristics in response to digital inputs
09/11/1991EP0314681B1 Final stage of a bridge circuit
09/11/1991EP0203923B1 Method for scanning a keyboard with capacitive keys and keyboard provided with means for scanning a keyboard according to this method
09/11/1991CN2084703U Touch type automatic extinguishing lamp switch
09/11/1991CN2084684U Leakage compensator for electric signal switch
09/11/1991CN2084672U Refrigerator with sound alarm
09/11/1991CN2084557U Touch type stepless light adjusting art desk lamp
09/11/1991CN1054512A Transistor switching circuit
09/10/1991US5048068 Magnetically operated pulser
09/10/1991US5048016 Circuit configuration for increasing the output voltage of an electronic switching stage
09/10/1991US5047987 Low voltage inhibit control apparatus
09/10/1991US5047675 Circuit device, made up of a reduced number of components, for simultaneously turning on a plurality of power transistors
09/10/1991US5047673 High speed output structure suitable for wired-OR structure
09/10/1991US5047669 Tristate circuit using bipolar transistor and CMOS transistor
09/10/1991US5047662 Inductive load driving circuit with inductively induced voltage compensating means
09/10/1991US5047656 Continuous duty circuitry for high speed switching of current from a constant current source
09/10/1991US5047628 Hybrid switch with solid-state condition
09/10/1991US5047623 Transparent selective illumination means suitable for use in optically activated electrical switches and optically activated electrical switches constructed using same
09/10/1991US5047621 Radial transmission line for waveform generation and power accumulation
09/10/1991US5046806 Single fibre control switches
09/10/1991CA1288811C Ac power control
09/05/1991WO1991013494A1 Electronic switch
09/05/1991WO1991013491A1 Transistor saturation-preventing circuit
09/05/1991DE4006596A1 Elektronischer schalter Electronic switch
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