Patents
Patents for H03K 17 - Electronic switching or gating, i.e. not by contact-making and -breaking (53,158)
07/1979
07/17/1979US4161659 Solid state proximity switch
07/17/1979US4161063 Method of making a cathode for an electrochemical cell
07/17/1979CA1058742A1 Solid state latching relay
07/10/1979US4161022 Controllable rectifier circuit for a power supply
07/10/1979US4160996 Switchable high voltage generator for penetration-type color CRT
07/10/1979US4160923 Touch sensitive electronic switching circuit for electronic wristwatches
07/10/1979US4160921 Thyristor control
07/10/1979US4160920 Bistable element and a switch circuit comprising such a bistable element
07/10/1979CA1058325A1 Enhancement-and depletion-type field effect transistors connected in parallel
07/03/1979US4160176 Electronic watch
07/03/1979US4160172 Circuit for controlling demands of high current load
06/1979
06/27/1979EP0002648A1 Stairway light time switch
06/26/1979US4159512 DC to DC converter circuit
06/26/1979US4159473 Charge sensitive switch
06/26/1979US4159442 Circuit for lighting like candlelight
06/26/1979US4159431 Electronic switch maintaining a predetermined state independent of supply voltage variation
06/26/1979CA1057433A1 Control device
06/26/1979CA1057202A1 Matrix switch having piezoelectric characteristics
06/19/1979US4158866 Protection circuit for transistorized switch
06/19/1979US4158803 Switching high voltage power supply
06/12/1979US4158216 Capacitive touch control
06/12/1979US4158150 Solid state relay with zero crossover feature
06/12/1979US4158149 Electronic switching circuit using junction type field-effect transistor
06/12/1979US4158117 Pressure sensitive switch
06/05/1979US4157578 Dv/dt protection for solid state switches
06/05/1979US4157539 Charge rate, capacitive switch system
06/05/1979US4157481 Integral cycle switch synchronized to axis-crossing
06/05/1979CA1056063A1 Self-checking read and write circuit
05/1979
05/29/1979US4156941 High speed semiconductor memory
05/29/1979US4156936 Apparatus and method for improved operation of bubble devices
05/29/1979US4156837 DC static switch circuit with power saving feature
05/29/1979CA1055574A1 Logic driver circuit with output protection
05/22/1979US4156191 Method and apparatus for adjusting the magnetic coupling between a Hall Effect switch and a permanent magnet
05/22/1979US4156153 Electronic switch
05/22/1979CA1055113A1 Solid state break-before-make base module and associated contact elements
05/16/1979EP0001756A1 Circuit for reducing the turn-off time of a thyristor
05/15/1979US4155017 Sharpening high power pulses
05/15/1979US4155015 Light switch
05/15/1979CA1054695A1 Article presence sensor
05/08/1979US4153872 Crest firing means
05/08/1979US4153870 Integral cycling relay
05/08/1979US4153850 Circuit for producing a series of substantially square wave output signals
05/08/1979CA1054218A1 Circuit arrangement for protecting thyristors
05/02/1979EP0001722A2 Fast high voltage on-off switch with possibility of voltage regulation, load- and self- protection
05/01/1979US4152607 Soft switch with rapid recovery circuit
05/01/1979CA1053774A1 Touch actuated electronic switch including protection from potential electricity
04/1979
04/24/1979US4151515 Load control apparatus
04/24/1979US4151444 Voltage switching circuit for a color display system
04/24/1979US4151427 High-voltage zero-crossing detector
04/24/1979US4151426 Security timer device
04/24/1979US4151425 Voltage sequencing circuit for sequencing voltages to an electrical device
04/24/1979US4151374 Bus connection detector circuit for bus connection matrix circuit
04/17/1979US4150417 Fail-safe timing circuit
04/17/1979US4150415 Energy conservation system
04/17/1979US4150413 Transistor overload inhibit
04/17/1979US4150361 Drive control for drive circuit of liquid crystal display
04/17/1979US4150256 Digital multiplexer incorporating high-speed analog sampling gates
04/17/1979US4149786 Camera exposure time control circuitry
04/10/1979US4149098 A. C. Switching system
04/10/1979US4149097 Waveform transition sensitive Josephson junction circuit having sense bus and logic applications
04/10/1979CA1052279A1 Switching circuit utilizing the base storage characteristic of a transistor for use in a facsimile transceiver and the like
04/03/1979US4148090 Apparatus for controlling an electromagnetic valve
04/03/1979US4147990 Fast-recovery circuit
04/03/1979US4147939 Electronic control system
04/03/1979US4147233 Timing circuit for a chassis lubricator
03/1979
03/27/1979CA1051548A1 Low power, fast rise time current driver for inductive load
03/20/1979US4145760 Memory device having a reduced number of pins
03/20/1979US4145748 Self-optimizing touch pad sensor circuit
03/20/1979US4145617 Control circuit for providing time selected application of A.C. power
03/13/1979US4144552 Sequential timing circuitry
03/13/1979US4144465 Self-resetting Josephson device circuit
03/13/1979US4143941 Low loss optical data terminal device for multimode fiber guide optical communication systems
03/07/1979EP0001001A1 A method of and apparatus for monitoring the operation of a motor vehicle
03/06/1979US4143383 Controllable impedance attenuator having all connection contacts on one side
03/06/1979US4143359 Decoder circuit
03/06/1979US4143287 Photo coupling line isolation circuit
03/06/1979US4142684 Pulse generator for intermittently energizing an actuating coil of a spray nozzle or the like
03/06/1979CA1050123A1 Switching circuit
03/06/1979CA1050108A1 Photoresponsive current limiting switching circuit
02/1979
02/27/1979US4142176 Series read only memory structure
02/27/1979US4142116 Adaptive threshold circuit
02/27/1979US4142115 Semiconductor device with a thermal protective device
02/27/1979US4142114 Integrated circuit with threshold regulation
02/27/1979CA1049628A1 Transistor driver circuit
02/22/1979WO1979000087A1 Touch control switch
02/21/1979EP0000857A1 Photoelectric control device
02/20/1979US4141004 Solid state digital to analog converter
02/20/1979US4140960 Current control circuit
02/20/1979US4140930 Voltage detection circuit composed of at least two MOS transistors
02/20/1979US4139935 Over voltage protective device and circuits for insulated gate transistors
02/20/1979CA1049105A1 Electronic switch
02/13/1979US4139906 Switch for fault tolerant bubble domain memory systems
02/13/1979US4139880 CMOS polarity reversal circuit
02/13/1979US4139837 Information entry system
02/06/1979US4138736 One level switch for magnetic bubble domain devices
02/06/1979US4138709 Proximity switch
02/06/1979US4138690 Darlington circuit semiconductor device
02/06/1979US4138615 Presettable integrating timing circuit
02/06/1979US4138614 JFET switch circuit
02/06/1979CA1048183A1 Four-level voltage supply for liquid crystal display