| Patents for H03K 17 - Electronic switching or gating, i.e. not by contact-making and -breaking (53,158) |
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| 05/22/1990 | US4928159 Semiconductor device |
| 05/22/1990 | US4928053 Control circuit for an inductive load |
| 05/22/1990 | US4928025 Emitter coupled logic circuit |
| 05/22/1990 | CA2003657A1 Power switching circuit, in particular for a frequency converter |
| 05/22/1990 | CA1269434A1 Equipment on automatic doors for the recognition of obstacles |
| 05/22/1990 | CA1269422A1 Circuit arrangement for driving a ic-module with digital signals |
| 05/22/1990 | CA1269421A1 Oscillation-free, short-circuit protection circuit |
| 05/17/1990 | WO1990005412A1 Darlington connected switch having base drive with active turn-off |
| 05/17/1990 | WO1990005383A1 Optical semiconductor device having a zero-crossing function |
| 05/16/1990 | EP0368524A1 Output buffer circuit |
| 05/16/1990 | EP0367984A1 Method and circuit arrangement to increase the maximum possible efficiency, the maximum possible frequency and the maximum possible utilization of the power components in resonant converter power supplies with a zero-crossing detector |
| 05/15/1990 | US4926451 Timing controller for high-speed digital integrated circuit |
| 05/15/1990 | US4926354 Power controller with low standby current drain |
| 05/15/1990 | US4926283 Temperature protected transistor circuit and method of temperature protecting a transistor |
| 05/15/1990 | US4926138 Fully-differential reference voltage source |
| 05/15/1990 | US4926074 Semiconductor switch with parallel lateral double diffused MOS transistor and lateral insulated gate transistor |
| 05/15/1990 | US4926062 Touch control circuit for ornamental lamps and method therefore |
| 05/15/1990 | US4926049 Reflection type photoelectric switch |
| 05/15/1990 | US4925156 Control circuit arrangement for solenoid valves |
| 05/15/1990 | US4924564 Ultrasonic remote controlled switching device |
| 05/09/1990 | EP0367301A2 Semiconductor switch circuit |
| 05/09/1990 | EP0367060A2 Microprocessor having high current drive |
| 05/09/1990 | EP0367006A2 Device for generating a reference voltage for a switching circuit including a capacitive bootstrap circuit |
| 05/09/1990 | EP0366817A1 Temperature-monitoring circuit in a monitoring device |
| 05/09/1990 | CN2057048U Multi-channel multifunctional combined switch remote-controlled directly with infrared ray |
| 05/09/1990 | CN2057026U Semi-automatic electricity saving switch for corridor lamp |
| 05/08/1990 | US4924344 Circuitry for protection against electromotively-induced voltage transients in solid state relay circuits |
| 05/08/1990 | US4924343 Solid state optical relay |
| 05/08/1990 | US4924222 Capacitive keyboard operable through a thick dielectric wall |
| 05/08/1990 | US4924192 Adjusting apparatus for adjusting sound volume or sound quality |
| 05/08/1990 | US4924122 Low leakage, A.C. proximity-switch circuit |
| 05/08/1990 | US4924113 Transistor base current compensation circuitry |
| 05/08/1990 | US4924112 Microprocessor having high current drive and feedback for temperature control |
| 05/08/1990 | US4924111 Microprocessor layout minimizing temperature and current effects |
| 05/08/1990 | US4924110 High speed step generator output circuit |
| 05/08/1990 | US4924045 Push button for a value input keyboard |
| 05/03/1990 | DE3836712A1 Highly flexible large-area sensor mat |
| 05/03/1990 | DE3836531A1 Stepper motor controller |
| 05/02/1990 | EP0366489A2 Nand gate circuits |
| 05/02/1990 | EP0366424A2 Method for driving a PNPN semiconductor device |
| 05/02/1990 | EP0366083A2 Integrated circuit having output circuit |
| 05/02/1990 | EP0365950A2 Circuit arrangement for presetting the trigger point of a inductive keyboard |
| 05/02/1990 | EP0365787A2 Capacitance membrane switchcore with intertrace capacitive coupling and/or intratrace capacitive coupling |
| 05/02/1990 | EP0365706A1 Power output stage with a load |
| 05/02/1990 | EP0191842B1 Assist circuit for a data bus in a data processing system |
| 05/01/1990 | US4922458 Output buffer circuit |
| 05/01/1990 | US4922365 Overvoltage suppressing circuit for semiconductor device |
| 05/01/1990 | US4922133 Voltage detecting circuit |
| 05/01/1990 | US4922129 Feed forward darlington circuit with reduced NPN reverse beta sensitivity |
| 05/01/1990 | US4922091 Direct generation of ultrafast electrical pulses |
| 05/01/1990 | CA1268524A1 High resolution digital delay timer |
| 04/26/1990 | DE3835751A1 Arrangement for reducing the inductance of conductors |
| 04/26/1990 | DE3835662A1 Device for actuating inductive loads in a motor vehicle |
| 04/25/1990 | EP0365109A1 Electronic unit operable in conjunction with body unit |
| 04/25/1990 | EP0365095A2 Single photon semiconductor avalanche photodiode and active quenching circuit assembly |
| 04/25/1990 | EP0364879A2 Gallium arsenide monolithically integrated sampling head using equivalent time sampling having a bandwidth greater than 100 GHZ |
| 04/25/1990 | CN2056553U Electronic type lamp switch |
| 04/25/1990 | CN2056551U 电子继电器 Electronic Relays |
| 04/24/1990 | US4920447 Method for protecting the gate unit for a GTO thyristor |
| 04/24/1990 | US4920343 Capacitive keyswitch membrane with self contained sense-to-ground capacitance |
| 04/24/1990 | US4920342 Membrane switchcores with high resisitivity ink circuits |
| 04/24/1990 | US4920287 Output buffer having reduced electric field degradation |
| 04/24/1990 | US4920286 Method and circuitry for compensating for negative internal ground voltage glitches |
| 04/24/1990 | US4920285 Gallium arsenide antenna switch |
| 04/24/1990 | US4920283 High speed, low noise integrated circuit |
| 04/24/1990 | US4920281 Proximity switch circuit |
| 04/24/1990 | CA1268221A1 Base drive circuit of transistor |
| 04/24/1990 | CA1268220A1 Voltage sensitive switch |
| 04/18/1990 | EP0363985A2 Power amplifier circuit for digital integrated circuits |
| 04/18/1990 | EP0363626A2 Digital signal level conversion circuit arrangement |
| 04/18/1990 | EP0363505A1 Method and circuit for increasing output impedance to a preset value during switching in a CMOS integrated power amplifier |
| 04/18/1990 | CN2056294U 精密记忆定时器 Precision Timer Memory |
| 04/18/1990 | CN2056285U High-current switch with high repeat frequency |
| 04/17/1990 | US4918640 Adder cell having a sum part and a carry part |
| 04/17/1990 | US4918591 High frequency interference suppression filter for circuits to be connected to a conductor |
| 04/17/1990 | US4918590 Hybrid circuit module having bridge circuit and rectifying circuit disposed on a same substrate |
| 04/17/1990 | US4918564 Load driver with delayed turn-off |
| 04/17/1990 | US4918560 Proximity operated machine control |
| 04/17/1990 | US4918370 Low voltage-controlled, stand-by electronic circuit with delayed switch off |
| 04/17/1990 | US4918340 GTO thyristor control circuit |
| 04/17/1990 | US4918339 Data output circuit |
| 04/17/1990 | US4918334 Bias voltage generator for static CMOS circuits |
| 04/17/1990 | US4918333 Microprocessor having high current drive |
| 04/17/1990 | US4918332 TTL output driver gate configuration |
| 04/17/1990 | US4918328 Apparatus and method for generating a step voltage waveform |
| 04/17/1990 | US4918326 Electronic switchgear, preferably operating contact-free |
| 04/17/1990 | US4918325 Fast risetime pulse power system |
| 04/11/1990 | EP0363020A1 Driving circuit |
| 04/11/1990 | CN2056000U Sound-control turnoff power source device |
| 04/11/1990 | CN2055999U Subminiature lossless time-delay and electricity-saving electronic switch |
| 04/10/1990 | US4916690 Division multiplex packet switching circuit using a circular shift register |
| 04/10/1990 | US4916613 Remote low power indicator for battery driven apparatus |
| 04/10/1990 | US4916572 Circuitry for protecting against load voltage transients in solid state relay circuits |
| 04/10/1990 | US4916385 Inverter circuit |
| 04/10/1990 | US4916378 Inductive load discharge current recirculation circuit with selectable "fast" and "low" modes |
| 04/10/1990 | US4916335 Superconducting circuit |
| 04/10/1990 | US4916323 Optical control circuit and a semiconductor device for realizing same |
| 04/10/1990 | EP0256004A4 Proximity sensing device. |
| 04/10/1990 | CA1267702A1 Thyristor commutation circuit |
| 04/05/1990 | DE3927307A1 Short circuit protected transistor circuit - includes MOSFET and parallel resistance between control connection for auxiliary IGBT and one main connection |