| Patents for H03K 17 - Electronic switching or gating, i.e. not by contact-making and -breaking (53,158) |
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| 02/10/1981 | US4250414 Voltage generator circuitry |
| 02/10/1981 | US4250413 Camera power supply maintaining circuit |
| 02/10/1981 | US4250409 Control circuitry using a pull-down transistor for high voltage field terminated diode solid-state switches |
| 02/10/1981 | US4250379 Safety selector switch |
| 02/10/1981 | US4250370 Digital control for a cooking time and power of an electric cooking device |
| 02/05/1981 | WO1981000275A1 Improvements in sensitive door edges |
| 02/05/1981 | WO1981000274A1 Contactless pressure sensitive switch |
| 02/04/1981 | EP0023271A1 Microprocessor-controlled data-input keyboard with variable-impedance keys |
| 02/03/1981 | US4249219 Current drive circuit for an induction coil |
| 02/03/1981 | CA1095184A1 Semiconductor junction-isolated pnpn crosspoint switch |
| 02/03/1981 | CA1095182A1 Integrated semiconductor crosspoint arrangement |
| 02/03/1981 | CA1095125A1 Circuit for detecting conductive thyristor |
| 01/28/1981 | EP0023130A1 Semiconductor switch |
| 01/28/1981 | EP0023127A1 CMOS Schmitt-trigger circuit |
| 01/27/1981 | US4247790 Failsafe train vehicle control signal threshold detector apparatus |
| 01/27/1981 | CA1094637A1 Sharpening high power pulses |
| 01/20/1981 | US4246594 Low crosstalk type switching matrix of monolithic semiconductor device |
| 01/20/1981 | US4246533 Proximity controlled power switching circuit |
| 01/20/1981 | US4246501 Gated back-clamped transistor switching circuit |
| 01/20/1981 | CA1094197A1 Keyboard encoding with repeat key pause |
| 01/20/1981 | CA1094175A1 Two-terminal network comprising a transistor |
| 01/13/1981 | US4245185 Solid state circuit breaker with three phase capability |
| 01/13/1981 | US4245184 AC Solid-state circuit breaker |
| 01/13/1981 | US4245166 Thyristor control circuit |
| 01/13/1981 | US4244344 Ignition system with overvoltage and excess current protection |
| 01/13/1981 | CA1093639A1 Dc static switch circuit with power saving feature |
| 01/07/1981 | EP0021141A1 Bipolar inverter and its use in a logic circuit |
| 01/07/1981 | EP0021086A1 Light activated device |
| 01/07/1981 | EP0020978A1 Switching device and its use in a switched power supply |
| 01/06/1981 | US4244000 PNPN Semiconductor switches |
| 12/30/1980 | US4242745 Electronic timepiece with electroacoustic transducer |
| 12/30/1980 | US4242729 Switching control of solenoid current in fuel injection systems |
| 12/30/1980 | US4242676 Interactive device for data input into an instrument of small dimensions |
| 12/30/1980 | US4242667 High density proximity switch arrangement |
| 12/30/1980 | US4242636 Digital operate/release timer |
| 12/30/1980 | US4242634 Electronic multiplying circuits |
| 12/30/1980 | US4242595 Tunnel diode load for ultra-fast low power switching circuits |
| 12/30/1980 | US4242594 Switch arrangement |
| 12/23/1980 | US4241358 Radiation sensitive device with lateral current |
| 12/23/1980 | US4241337 Appliance door position sensor arrangement |
| 12/23/1980 | US4241267 Switching device |
| 12/23/1980 | US4240528 Field sensor |
| 12/16/1980 | US4240088 Semiconductor high-voltage switch |
| 12/16/1980 | US4239989 Method and apparatus for driving a transistor operated in saturation |
| 12/16/1980 | US4239988 Turn off method for power transistor switch |
| 12/16/1980 | US4239987 Switching circuit for controlling various appliances |
| 12/16/1980 | US4239986 Power control arrangement and control circuit especially suitable for use therewith |
| 12/16/1980 | US4239985 Trigger circuit for a thyristor |
| 12/16/1980 | US4239478 Check circuit for combustion process control timer |
| 12/16/1980 | CA1091790A1 Electro-optical switching system |
| 12/16/1980 | CA1091783A1 Keyboard encoding system with electronic hysteresis |
| 12/10/1980 | EP0020193A1 Apparatus for controlling the actuation of at least one electromagnetic fuel injector |
| 12/10/1980 | EP0019890A1 Circuit arrangement for driving electromagnets in recording devices used in the telewriter technique |
| 12/10/1980 | EP0019865A1 Digital semiconductor circuit |
| 12/10/1980 | EP0019813A1 Electronic on-off touch switch |
| 12/10/1980 | EP0019812A1 Electronic on-off touch switch |
| 12/09/1980 | US4238813 Compensated dual injector driver |
| 12/09/1980 | US4238723 Power control system |
| 12/02/1980 | US4237548 Electronic timepiece |
| 12/02/1980 | US4237509 Thyristor connection with overvoltage protection |
| 12/02/1980 | US4237421 Single-electrode capacitance touchpad sensor systems |
| 12/02/1980 | US4237386 Plug-in module for touch control switching |
| 12/02/1980 | US4237374 Counting system for counting newspapers or the like |
| 12/02/1980 | CA1090900A1 Capacitive key for keyboard |
| 11/26/1980 | EP0019471A1 Transistor switching circuit |
| 11/26/1980 | EP0019348A1 Tri-state encoding circuit for electronic musical instrument |
| 11/25/1980 | US4236200 Semiconductor circuit having a series-connected reactor |
| 11/25/1980 | US4236089 Floating power switch |
| 11/25/1980 | US4236088 Noise-free switching circuit for and method of electronically selecting audio input signals in audio systems |
| 11/25/1980 | CA1090432A1 Crosspoint bias circuit arrangement |
| 11/18/1980 | US4234872 Circuit arrangement for a keyboard |
| 11/18/1980 | US4234871 Capacitive keyboard for data processing equipments |
| 11/18/1980 | US4234813 Piezoelectric or pyroelectric polymer input element for use as a transducer in keyboards |
| 11/18/1980 | US4234805 Circuit and method for paralleling power transistors |
| 11/13/1980 | WO1980002486A1 Pulse shaping circuit |
| 11/12/1980 | EP0018598A1 Circuit for limiting the switching current in a series circuit consisting of a current transformer, a semi-conductor device, a protection inductance and an overload-sensitive cut-out |
| 11/12/1980 | EP0018573A1 Monolithically integrated digital MOS semiconductor circuit |
| 11/11/1980 | US4233593 Capacitive touch control and display |
| 11/11/1980 | US4233529 Transistors power stages |
| 11/11/1980 | US4233522 Capacitive touch switch array |
| 11/11/1980 | US4233505 Light receiving circuit having fast response time and a stable output waveform |
| 11/11/1980 | CA1089541A1 Josephson interferometer structure which suppresses resonances |
| 11/11/1980 | CA1089540A1 Two-port current injection interferometer amplifiers and logic circuits |
| 11/04/1980 | US4232236 Output converting circuit for a programmable sequence controller |
| 11/04/1980 | US4232235 Combining thyristor circuits of various circuit configurations |
| 11/04/1980 | US4232234 Semiconductor switch circuit |
| 11/04/1980 | US4231331 Pulse generator of the corona discharge type for sensing engine crankshaft angle on an engine control system |
| 11/04/1980 | CA1089034A1 Current switch circuit having an active load |
| 10/29/1980 | EP0018172A2 High speed electronic switching circuit |
| 10/28/1980 | US4231054 Thyristor with starting and generating cathode base contacts for use in rectifier circuits |
| 10/28/1980 | US4230955 Method of and apparatus for eliminating priming and carrier sweep-out losses in SCR switching circuits and the like |
| 10/28/1980 | CA1088637A1 High power variable pulse width triggering circuits |
| 10/21/1980 | US4229756 Ultra high speed complementary MOS device |
| 10/21/1980 | US4229681 Frequency/sensitive switching circuit |
| 10/21/1980 | US4229670 Integrated circuit having first and second internal circuits controlled by a common input terminal |
| 10/21/1980 | US4229071 Electro-optical switching apparatus |
| 10/21/1980 | CA1088195A1 Zero phase switching for multi-phase systems |
| 10/21/1980 | CA1088159A1 Hall-effect integrated circuit switch |
| 10/15/1980 | EP0017343A1 Radio frequency generators |
| 10/15/1980 | EP0017318A1 Capacitive switching circuit for energizing remote controlled device |