| Patents for H03K 17 - Electronic switching or gating, i.e. not by contact-making and -breaking (53,158) |
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| 06/29/1988 | EP0272924A2 Pulse generator |
| 06/29/1988 | EP0272898A2 AC solid state switch |
| 06/29/1988 | EP0272744A2 Circuit arrangement with a high voltage bipolar transistor |
| 06/29/1988 | EP0272514A1 Circuit arrangement for limiting the switch-on current and for overvoltage protection of switched power supply apparatuses |
| 06/29/1988 | CN87214432U Multi-purpose teleswitch for current alignment-voltage |
| 06/29/1988 | CN87210210U 电子验电器 Electronic electroscope |
| 06/29/1988 | CN87207448U Series contactless switch |
| 06/29/1988 | CN87108161A Electronics shf switching device |
| 06/28/1988 | US4754225 Phase comparator insensitive to clock asymmetry |
| 06/28/1988 | US4754177 Device for magnetic pulse treatment of ferromagnetic material |
| 06/28/1988 | US4754176 Miniature high voltage solid state relay |
| 06/28/1988 | US4754175 Solid state relay having a thyristor discharge circuit |
| 06/28/1988 | US4754166 Reset circuit for integrated injection logic |
| 06/28/1988 | US4754158 Dual threshold sensitive transistor turn-off circuit |
| 06/28/1988 | US4753323 Safety system for closing doors |
| 06/28/1988 | CA1238692A1 Field-effect transistor current switching circuit |
| 06/23/1988 | DE3742075A1 Device for compensating for switching delays |
| 06/23/1988 | DE3642249A1 Pulse amplifier for the time service technology |
| 06/22/1988 | EP0272171A1 Digital signals transmission circuit for a telephone network |
| 06/22/1988 | EP0271959A2 High voltage power transistor circuits |
| 06/22/1988 | EP0271763A1 Thyristor ignition device |
| 06/22/1988 | CN87205121U Wireless remote control apparatus for ac electric source of household electric appliances |
| 06/22/1988 | CN86107250B Ac complementary switch |
| 06/21/1988 | US4752862 Electronic device |
| 06/21/1988 | US4752705 Off-gate circuit for a GTO thyristor |
| 06/21/1988 | US4752703 Current source polarity switching circuit |
| 06/21/1988 | US4752702 Bootstrap pilot circuit in N-MOS technology for capacitive loads |
| 06/21/1988 | US4752693 Voltage/current converter |
| 06/21/1988 | CA1238378A1 Sampling circuit for microwave signals |
| 06/15/1988 | EP0271331A2 Semiconductor integrated circuit |
| 06/15/1988 | EP0270940A1 Circuit arrangement for limiting overvoltages at an SCR and for the power supply of a control circuit of the protected SCR |
| 06/15/1988 | EP0270622A1 Electronic control system, in particular for a printer. |
| 06/15/1988 | CN87208416U Power saving key controll delay switch |
| 06/15/1988 | CN86210457U Semi-auto and auto switch for electric appliances of stairs and corridor |
| 06/14/1988 | US4751408 Voltage-switching device |
| 06/14/1988 | US4751406 ECL circuit with output transistor auxiliary biasing circuit |
| 06/14/1988 | US4751403 Transistor driving circuit and circuit controlling method |
| 06/14/1988 | US4751401 Low voltage switch |
| 06/14/1988 | US4751399 Automatic lighting device |
| 06/09/1988 | DE3640661A1 Circuit arrangement for overvoltage protection of a thyristor in the blocking direction |
| 06/08/1988 | EP0269758A1 Current change-over switch |
| 06/08/1988 | CN87211201U Proximity switch adopting mos appliance |
| 06/08/1988 | CN87210260U Three phase noncontact electronic switch for direct and reverse operation |
| 06/08/1988 | CN87204620U 往复式时间继电器 Reciprocating time relay |
| 06/08/1988 | CN87108040A Initial value design system of electronic apparatus |
| 06/08/1988 | CN86107987A Continuously sparking electronic ignitor |
| 06/07/1988 | US4750100 Transfection high voltage controller |
| 06/07/1988 | US4750079 Low side switch integrated circuit |
| 06/07/1988 | US4750078 Semiconductor protection circuit having both positive and negative high voltage protection |
| 06/07/1988 | US4749954 Current switch capable of producing a stable output of a desired level |
| 06/07/1988 | US4749889 Temperature compensation apparatus |
| 06/07/1988 | US4749876 Universal power transistor base drive control unit |
| 06/01/1988 | EP0269320A1 Optical switch and optical keyboard utilizing the same |
| 06/01/1988 | EP0269214A2 Power supply and control systems for totem pole switches |
| 06/01/1988 | EP0269185A2 Switching device with dynamic hysteresis |
| 06/01/1988 | EP0269117A1 Continuous spark electronic igniter |
| 06/01/1988 | EP0268930A1 Circuit arrangement with a self-protecting power switch |
| 06/01/1988 | EP0268625A1 Method and device for controlling an electromagnet of which the energization by an alternating current causes two parts to come into contact. |
| 06/01/1988 | EP0268580A1 Magnetic field-dependent, inductive proximity switch. |
| 06/01/1988 | EP0123586B1 Tri-state driver circuit for automatic test equipment |
| 06/01/1988 | DE3722076C1 Circuit arrangement for uniform current distribution in the triggering of parallel-connected thyristors |
| 06/01/1988 | DE3640551A1 Electrical switch |
| 06/01/1988 | CN87211766U Time delay switch with electronic automatic forewarning of cut-off |
| 06/01/1988 | CN87208762U Time-delay self-interrupting type pulling switch |
| 06/01/1988 | CN87207512U Double-program time control relay |
| 06/01/1988 | CN87207391U Photoelectric travel limit switch |
| 05/31/1988 | US4748532 Transformer coupled power switching circuit |
| 05/31/1988 | US4748417 Method and circuit arrangement for switching a clock-controlled device having a plurality of operating statuses |
| 05/31/1988 | US4748398 Circuit for controlling a series switching element in a clocked power supply |
| 05/31/1988 | US4748390 Mounted on a windshield to detect water adhesion on the external surface |
| 05/31/1988 | US4748352 Power source reset circuit for contactless switch |
| 05/31/1988 | US4748351 Power MOSFET gate driver circuit |
| 05/31/1988 | CA1237488A1 Switching circuit utilizing a field effect transistor |
| 05/31/1988 | CA1237487A1 Radio frequency switch |
| 05/26/1988 | DE3639495A1 Circuitry for the switches of pulse-controlled invertors and DC semiconductor controllers for multi-quadrant operation |
| 05/25/1988 | EP0268530A2 Oscillation-free, short-circuit protection circuit |
| 05/25/1988 | EP0268497A2 Printed circuit board |
| 05/25/1988 | EP0268430A2 An optically coupled semiconductor switch and driving method adapted thereto |
| 05/25/1988 | EP0268244A2 Safety device |
| 05/25/1988 | CN87211459U High voltage electronic two-way switch with high input impedance |
| 05/25/1988 | CN86107818A Protective device for switch elements in pulse generating circuit of capacitive load |
| 05/25/1988 | CN86107250A Ac complementary switch |
| 05/24/1988 | US4747036 Fault detector apparatus having serial fault-detection signal path |
| 05/24/1988 | US4746824 High potential hold circuit |
| 05/24/1988 | US4746822 CMOS power-on reset circuit |
| 05/24/1988 | US4746820 Pulse frequency responsive switch |
| 05/24/1988 | US4746818 Circuit for maintaining the state of an output despite changes in the state of input |
| 05/24/1988 | US4746817 BIFET logic circuit |
| 05/24/1988 | US4746814 Semiconductor device for conducting primary current upon receipt of a control signal |
| 05/24/1988 | US4746813 Switching circuit for inductive load with RFI suppression |
| 05/24/1988 | US4746812 Process for control of the instant of opening of an interrupter, and corresponding logic circuit |
| 05/24/1988 | CA1237170A1 A.c. solid state relay circuit and thyristor structure |
| 05/19/1988 | WO1988003608A1 High-voltage switch |
| 05/19/1988 | DE3734494A1 Explosionssichere prozesssteueranordnung Explosion-proof process control arrangement |
| 05/19/1988 | DE3638174A1 Driver circuit for inductive loads |
| 05/18/1988 | EP0267465A1 Pacemaker output switch protection |
| 05/18/1988 | EP0267455A1 Impulse current generator switched to a load |
| 05/18/1988 | EP0267253A1 Method and device for controlling an electromagnet of which the energization by a monoarch periodic current causes the actuation of a moveable part. |
| 05/17/1988 | US4745629 Duty cycle timer |
| 05/17/1988 | US4745613 Laser flash lamp triggering circuit |