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)
11/1987
11/24/1987	US4709161 Transistor drive circuit
11/24/1987	US4709160 Solid state dc power switch
11/24/1987	CA1229655A1 Led driver circuit
11/19/1987	EP0245819A2 Fast acting solid state ac circuit breaker
11/19/1987	EP0245769A1 Solid-state relay
11/19/1987	EP0245763A2 Circuit arrangement for controlling power field-effect transistors
11/19/1987	EP0245473A1 Drive circuit for fast switching of darlington-connected transistors
11/19/1987	DE3643060A1 Safety device
11/18/1987	CN86210541U Energy-saving sound controll switch used for household electric appliances and lighting devices
11/18/1987	CN85205552U Automatic controller for motor reversion
11/17/1987	US4707692 Electroluminescent display drive system
11/17/1987	US4707620 Adjustable impedance driver network
11/17/1987	US4706619 Method of current pulse operation
11/17/1987	CA1229384A1 Test circuit for differential cascode voltage switch
11/17/1987	CA1229379A1 Method of operating parallel-connected semiconductor switch elements
11/12/1987	DE3615652A1 Inductive detector (locator)
11/11/1987	EP0244907A1 Switched voltage converter
11/11/1987	EP0244846A2 Photoelectric switching apparatus
11/11/1987	EP0244743A2 Two-wire switch
11/11/1987	EP0085112B1 Drive circuit for power switching transistor
11/11/1987	CN86207718U Power-saving watt-hour meter
11/10/1987	US4706288 Speech synthesizer output device
11/10/1987	US4706222 Darlington type switching stage for a line decoder of a memory
11/10/1987	US4706159 Multiple power supply overcurrent protection circuit
11/10/1987	US4706157 Semiconductor intergrated circuit
11/10/1987	US4706034 Signal discriminating apparatus for extracting component signals from a composite signal
11/10/1987	US4705994 Electric equipment driving circuit
11/10/1987	US4705968 Semiconductor integrated circuit device with high breakdown voltage level
11/10/1987	US4705964 Integrated circuit hall switch with adjustable operate point
11/10/1987	US4705963 AC controlled diode switch
11/10/1987	US4705962 Solid state dc rate of rise controlled switch
11/10/1987	US4705412 Protection circuit for drive transistor of printer head
11/10/1987	US4705322 Protection of inductive load switching transistors from inductive surge created overvoltage conditions
11/05/1987	WO1987006782A1 Optical keyboard with enhanced sensitivity
11/05/1987	WO1987006727A1 Signal input circuit
11/05/1987	DE3614691A1 Integrable pulse amplifier
11/04/1987	EP0244311A1 Self-regulating proximity detector
11/04/1987	EP0244186A2 Electronic power supply
11/04/1987	EP0244054A2 Laser diode driver
11/04/1987	EP0243978A1 Input circuit having a photo-coupler
11/04/1987	EP0243844A2 Method and circuit for gated turn-off of a thyristor
11/04/1987	EP0243634A1 Circuit arrangement for driving an IC unit by digital signals
11/04/1987	EP0243499A1 Electronic device having a power supply input circuit in which noise from static electricity is suppressed
11/04/1987	EP0243491A1 Pyroelectric keyboard
11/04/1987	EP0243411A1 Touch sensitive indicating light.
11/04/1987	EP0243403A1 Rfi suppression technique for switching circuits.
11/03/1987	US4704706 Booster circuit
11/03/1987	US4704655 Solenoid drive circuit
11/03/1987	US4704601 Keyboard data entry system with hysteresis
11/03/1987	US4704587 Crystal oscillator circuit for fast reliable start-up
11/03/1987	US4704561 Push-pull generator
11/03/1987	US4704551 Low voltage/high voltage field effect transistor (FET) switching circuit for printed circuit board tester
11/03/1987	US4704550 Method and apparatus for driving electrical circuits
11/03/1987	US4704543 Pulse generator
11/03/1987	US4704524 Attachment for electronic switch
10/1987
10/29/1987	DE3702680A1 Verfahren und schaltung zur ansteuerung von elektromagnetischen verbrauchern Method and circuit for activation of electromagnetic sumers
10/28/1987	EP0243317A2 Optical coupler
10/28/1987	EP0242759A2 Current limiter for constant current for switching driving devices
10/28/1987	EP0242651A2 An integrated circuit including a high voltage swing open collector driver
10/28/1987	EP0242635A2 Control signal profiler for multiple actuator assembly
10/27/1987	US4703407 Power supply for totem pole power switches
10/27/1987	US4703390 Integrated circuit power timer
10/27/1987	US4703250 Electric supply
10/27/1987	US4703197 Phase-controlled power switching circuit
10/27/1987	US4703194 Touch operated electronic switch for alternating current
10/27/1987	CA1228643A1 Analog process controller with digital monitor
10/27/1987	CA1228642A1 Electrical systems comprising temperature sensitive devices
10/21/1987	EP0242018A2 Memory gate for error sampler
10/21/1987	EP0241829A2 Arrangement for switching high-frequency signals
10/21/1987	EP0241785A2 Output driver circuit
10/21/1987	EP0241736A1 Firing method for a thyristor circuit
10/21/1987	EP0241483A1 Low leakage, a.c. proximity switch circuit.
10/21/1987	CN87100774A Circuit for switching between balanced networks
10/21/1987	CN86107701A Circuit with an insulated-gate field-effect transistor and a coil
10/20/1987	USRE32526 Gated solid state FET relay
10/20/1987	US4701747 Data input system including a keyboard having no moving parts
10/20/1987	US4701676 Touch control adaptor
10/20/1987	US4701645 Switching circuit with low conducted electromagnetic interference characteristics
10/20/1987	US4701638 Antisaturation circuit for integrated PNP transistor
10/20/1987	US4701635 Current driving circuit with CMOS inverter
10/20/1987	US4701631 Monolithically integrated control circuit for the switching of transistors
10/15/1987	DE3612546A1 Contactless railway track switch
10/14/1987	EP0241067A1 Filter circuit for a metal oxide integrated semiconductor device and its use in such a device
10/14/1987	EP0240805A2 Current steering cross-point switch matrix
10/13/1987	US4700380 Solid state remote actuable switch
10/13/1987	US4700282 Monolithically integratable control circuit having a push-pull output stage for the switching of inductive loads
10/13/1987	US4700256 Solid state current limiting circuit interrupter
10/13/1987	US4700242 Magnetic head switching circuit for magnetic recording and reproducing apparatus
10/13/1987	US4700125 Power supply switching circuit
10/13/1987	US4700086 Consistent precharge circuit for cascode voltage switch logic
10/13/1987	US4700083 Resonant circuit arrangement for switching the current in an inductive load
10/13/1987	US4700060 Device for selectively routing audio signals bidirectionally along one or two signal paths
10/13/1987	US4699449 Optoelectronic assembly and method of making the same
10/13/1987	CA1228128A1 Wideband switching matrix network in matrix form
10/13/1987	CA1228117A1 Incremental base drive circuit for a power transistor
10/08/1987	WO1987006077A1 Opto-electronic display device with proximity detector
10/08/1987	DE3714683A1 Control circuit for a gate turn-off thyristor
10/08/1987	DE3703666A1 Mikromechanischer druckschalter The micromechanical pressure switch
10/08/1987	DE3611358A1 Optoelektronische anzeigevorrichtung mit naeherungssensor Optoelectronic display device with naeherungssensor
10/07/1987	EP0240436A1 DC voltage multiplier which can be integrated into a semiconductor structure

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