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)
01/1991
01/09/1991EP0406845A2 Touch button light ring system
01/09/1991EP0406491A1 Noise removing circuit
01/09/1991CN2069184U 光纤开关 Fiber Switch
01/09/1991CN2069183U Automatic cut-off switch in case of power failure
01/09/1991CN2069182U Continuously adjustable speed regulator and timer for electric fan
01/09/1991CN2069181U Contactless and stepless speed regulator for electric tool
01/08/1991US4983865 High speed switch matrix
01/08/1991US4983858 Level determining circuit generating output signal at first or second output terminal according to level of input signal
01/08/1991US4983857 Integrated circuit chip
01/03/1991DE3920805A1 Short circuit protected driver stage - has monitoring circuit in front of power transistor for latter blocking at high consumer current, or short circuit
01/03/1991DE3920235A1 Schaltnetzteil Switching power supply
01/02/1991EP0405441A2 Buffer circuit having a voltage drop means
01/02/1991EP0405407A2 Circuit arrangement for controlling a MOSFET with a load connected to its source
01/02/1991EP0404996A1 Converter presenting an actual current value
01/02/1991EP0183742B1 Electronic switch
01/02/1991CN2068742U Time-limit electricity-saving lamp cap controlled by sound and flash
01/01/1991US4982315 Voltage multiplier circuit
01/01/1991US4982113 Signal distributing unit for various input signals different in voltage level
01/01/1991US4982107 Sourcing or sinking output circuit
12/1990
12/27/1990WO1990016110A1 Circuit network
12/27/1990WO1990016045A2 Finger operable control devices
12/27/1990EP0404360A2 Shielded transistor device
12/27/1990EP0404147A1 Controlled levitation/suspension in a magnet-superconductor system
12/27/1990EP0404124A2 Charge pump having pull-up circuit operating with two clock pulse sequences
12/27/1990EP0404065A1 Sensor having an oscillation circuit
12/27/1990EP0403972A2 Amplifier drive circuit for inductive loads
12/27/1990EP0403733A1 Oscillator, particularly for an inductive proximity sensor or switch operating without contact
12/27/1990CA1278341C Transistor base current regulator
12/27/1990CA1278340C Dc chopper circuit fed by a constant current source
12/26/1990CN2068297U Series connection sound-control self-stop switch
12/26/1990CN2068276U Electronic delay, saving and life-increasing pullswitch
12/26/1990CN1048122A Internal voltage transducer of semiconductor integrated circuit
12/26/1990CA2019826A1 Transistor device drive circuit
12/25/1990US4980792 BiCMOS power transition circuit
12/25/1990US4980685 Scanning optical keyboard
12/25/1990US4980576 Inductance and capacitance charge pump circuit for driving power MOS transistor bridges
12/20/1990DE4006306A1 Innerer spannungswandler in einer integrierten halbleiterschaltung Internal voltage converter in an integrated semiconductor circuit
12/20/1990DE3919951A1 Voltage controlled semiconductor switch - has second transistor with emitter-collector path in load circuit in series with first transistor emitter-collector path
12/20/1990DE3919916A1 Inductive proximity switch with LC oscillation circuit - has second circuit coil adjacent to first one with mutual effect for specified attenuation
12/19/1990EP0403269A2 Arbiter Circuit
12/19/1990EP0402928A2 Circuit for internal current limiting in a fast high side power switch
12/19/1990EP0402663A2 Control circuit
12/19/1990EP0402395A1 Voltage converter
12/19/1990CN2067886U Power saving controller for stair lamp
12/19/1990CN2067878U Electronic touching switch
12/19/1990CN2067877U Tc trigger charging delay switch
12/19/1990CN2067860U Power-saving apparatus for refrigerator
12/18/1990US4979089 Method for balancing currents to switching devices
12/18/1990US4979066 Loading controlling apparatus
12/18/1990US4978905 MOS integrated circuit
12/18/1990US4977984 Apparatus and method for detecting elevator car position in a door zone
12/18/1990CA1278097C High sampling frequency sample-and-hold circuit
12/18/1990CA1278065C Inductance divider sensor
12/13/1990DE4017099A1 State detector for light ignitable thyristor - has thyristor terminal coupled to energising circuit by optical fibre
12/13/1990DE3918640A1 Contactless signal generator for optical fibre system - has mirror with magnetic member, forming movable unit, actuated by magnetic target
12/12/1990EP0401587A2 Monolithic zero crossing triac driver
12/12/1990CN2067466U Permanent-magnetic ac proximity switch
12/12/1990CN2067465U Multipurpose high-efficiency electronic timing electricity economizer
12/12/1990CN2067464U Contactless ac switch with protective circuit
12/11/1990US4977493 Efficient snubber for rectifier circuits
12/11/1990US4977476 Semiconductor switch
12/11/1990US4977341 Integrated circuit to reduce switching noise
12/11/1990US4977338 High speed bipolar-MOS logic circuit including a series coupled arrangement of a bipolar transistor and a logic block having a MOSFET
12/11/1990US4977337 Bi-CMOS logic circuit
12/11/1990US4977333 Power semiconductor device including an arrangement for controlling load current by independent control of a plurality of semiconductor elements
12/11/1990US4976337 Proximity detection systems
12/06/1990DE3917806A1 Limiting control of actuator - is provided by comparison process to identify when limit is reached
12/05/1990EP0401136A1 Detection circuit and method for temperature-compensating of the oscillation of a resonating circuit
12/05/1990EP0400908A2 Line Driver
12/05/1990EP0400153A1 Optical semiconductor device having a zero-crossing function
12/04/1990US4975921 Integrated prepulse circuits for efficient excitation of gas lasers
12/04/1990US4975755 Optically controllable static induction thyristor device
12/04/1990US4975616 Piezoelectric transducer array
12/04/1990US4975599 Method and resulting devices for compensating for process variables in a CMOS device driver circuit
12/04/1990US4974874 Air bag system for a motor vehicle
11/1990
11/29/1990WO1990014604A1 Proximity sensor
11/29/1990DE3926657A1 Cmos-eingangspufferschaltung CMOS input buffer circuit
11/28/1990EP0399849A2 Position detection sensor
11/28/1990EP0399754A2 Semiconductor device protection circuit
11/28/1990EP0399563A2 High frequency oscillation type proximity switch
11/28/1990EP0399333A2 ECL/CML emitter follower current switch circuit
11/28/1990EP0399242A2 Temperature stabilized inductive proximity switch
11/28/1990EP0399126A1 Current source technology
11/28/1990EP0229761B1 Fuel injection solenoid driver circuit
11/28/1990EP0070873B1 Driver circuit for use with inductive loads or the like
11/28/1990CN2066642U Elongation, electricity saving, electronic controller for corridor lamp
11/27/1990US4974239 Output circuit of a charge transfer device
11/27/1990US4974214 Method for the suppression of interference signals during operation of ultrasonic proximity transducers
11/27/1990US4973865 Auto-delay gain circuit
11/27/1990US4973861 Integrated circuit comprising logic circuits and at least one push-pull stage
11/27/1990US4973837 Proximity detectors with dual-speed tracking circuitry
11/27/1990US4973834 Optical switching device employing a frequency synchronous circuit
11/27/1990CA1277001C Proximity sensing device
11/27/1990CA1276993C Transistor fault tolerance method and apparatus
11/22/1990EP0398526A1 Improved power supply circuit for a gaseous discharge tube device
11/22/1990EP0398456A2 Circuit arrangement for the electrically isolated reception of binary electrical signals
11/22/1990EP0398246A2 Photocoupler apparatus capable of shortening switching time of output contact
11/22/1990EP0398170A2 Timed current boost for DMOST driver with rapid turn-on and low quiescent current
11/22/1990EP0398098A2 Output buffer for reducing switching induced noise
11/22/1990EP0398026A2 Semiconductor AC switch
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