Patents for H02H 11 - Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result (2,416) |
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06/12/1991 | CN1052224A Automatic protector of refrigerator |
05/23/1991 | DE4008161C1 Integrated circuitry projecting and controlling electrical appts. - has voltage limiter delivering pulse signal to counter if mains voltage is applied in-front of main switch |
05/16/1991 | DE4010971C1 Combination electro-tool and suction appts. - has monitoring circuit connected to test circuit checking site of operating switch |
04/30/1991 | US5012381 Motor drive circuit with reverse-battery protection |
04/25/1991 | DE3934504A1 Polarity reversal protection circuit for DC-fed equipment - ensures correct polarity of voltage supplied to load from reversible DC source via bistable relay circuit |
04/25/1991 | DE3934503A1 Polarity reversal protection circuit for DC-fed equipment - ensures correct polarity of voltage supplied to load from reversible DC source via bistable relay circuit |
04/03/1991 | EP0419991A2 Load driver with reduced dissipation under reverse-battery conditions |
03/28/1991 | DE3930896A1 Polarisation protective circuit for DC consumer - has inversely operated MOSFET between earth input and output |
03/21/1991 | DE3934421C1 Protective circuit for circuitry with light indicator in motor vehicle - has transistor breaking current flow in dependence on information voltage from resistor measuring current |
03/14/1991 | DE3930091A1 Polarity sensitive load reverse voltage protection circuit - has power MOSFET and bistable comparator for efficient monitoring and control of directional current flow to load |
02/20/1991 | CN2071836U Electric current controlled protective device for refrigerator |
02/12/1991 | US4992683 Load driver with reduced dissipation under reverse-battery conditions |
01/29/1991 | US4989114 Bridge circuit having polarity inversion protection means entailing a reduced voltage drop |
01/22/1991 | US4987513 Apparatus and method for selectively delaying the connection of an electrical supply voltage to an electrical load |
12/25/1990 | US4980622 Actuator two-fault tolerance apparatus |
12/12/1990 | CN2067471U Multistage safety device for communication equipment |
11/28/1990 | EP0399020A1 Integrated semiconductor circuit with polarity reversal protection. |
09/26/1990 | EP0389452A2 Bridge circuit having polarity inversion protection means entailing a reduced voltage drop |
09/18/1990 | US4958251 Guarded electronic circuit from reversal of its supply battery polarity |
09/18/1990 | US4958055 Control circuit for a refrigerator combined with a microwave oven |
09/04/1990 | CA1273700A1 Method for switching-error-protected actuation of the switching devices for carrying out the method |
08/23/1990 | WO1990009694A1 Improvements in or related to circuit breakers used with electrical apparatus |
08/23/1990 | WO1990005918A3 Universal output circuit |
07/18/1990 | EP0377683A1 Circuit arrangement for the high-voltage supply of an electrostatic filter |
07/12/1990 | WO1990007813A1 Process for monitoring short-circuits in a voltage circuit inverter |
06/20/1990 | CN1043231A Automatic control device for preventing closing switch with grounded wire |
06/13/1990 | EP0372050A1 Electrical safety apparatus. |
05/31/1990 | WO1990006012A1 Integrated semiconductor circuit with polarity reversal protection |
05/31/1990 | WO1990005918A2 Universal output circuit |
05/30/1990 | EP0370828A2 Electric power installations, especially for office furniture |
05/23/1990 | EP0369782A2 Drive circuit for operating an appliance such as a printer |
05/18/1990 | CA2002815A1 Integrated semiconductor circuit with polarity reversal protection |
05/01/1990 | CA1268548A1 Electronic board identification |
04/26/1990 | DE3835662A1 Device for actuating inductive loads in a motor vehicle |
04/04/1990 | EP0360991A2 An integrated circuit self-protected against reversal of the supply battery polarity |
03/29/1990 | DE3929185A1 Polarity reversal protection system for battery - uses electronic component or integrated circuit providing reverse voltage protection for each individual battery cell |
03/21/1990 | EP0358924A1 Control apparatus with a circuit arrangement for its protection when the earth connection is interrupted |
03/14/1990 | EP0358590A1 Actuator two-fault tolerance apparatus |
02/22/1990 | DE3828000A1 Device for preventing the effects of moisture condensation in electrical equipment |
02/13/1990 | US4901195 Self-proving vehicle grounding system |
02/07/1990 | CN2052581U Potentiostat for all-automatic save energy refrigerator |
02/06/1990 | US4898229 Thermostat with integral means for detecting out-of-phase connection of a two-transformer power source |
01/16/1990 | US4894745 Method and apparatus for protecting against semiconductor power control failure |
01/10/1990 | EP0349836A2 A guarded electronic circuit from reversal of its supply battery polarity |
12/27/1989 | EP0348128A1 Shock-proof mains voltage supply outlet and method |
12/26/1989 | US4890212 Electric apparatus having a start-up control function |
12/19/1989 | US4888660 Shock-proof mains voltage supply outlet and method |
12/13/1989 | CN2049422U Fully-automatic protective device for household electric appliance |
12/06/1989 | CN2049030U Energy saving protector for refrigerator |
11/30/1989 | WO1989011747A1 Electrical safety apparatus |
11/30/1989 | WO1989011338A1 Circuit arrangement for the high-voltage supply of an electrostatic filter |
11/23/1989 | EP0342614A1 Safety power supply system for movable electric machines |
11/01/1989 | CN2047075U Refrigerator-protector capable of recalling delay |
10/25/1989 | CN2046689U Protector of domastic electric appliances |
10/18/1989 | EP0337337A2 Method for the switching failure protected actuation of circuit breakers of a switch gear installation |
10/12/1989 | DE3809576A1 Switching device for providing polarity in telecommunications devices |
10/11/1989 | CN2045908U Electricity-saving life-prolongation protector for refrigerator |
10/04/1989 | CN2045551U 冰箱保护器 Refrigerator protector |
10/04/1989 | CN2045547U Safety automation protector for domestic electric appliances |
09/27/1989 | CN2045157U Fully automatic comprehensive protective device for household appliances |
09/27/1989 | CN2045154U Integrated-circuit protective device for air conditioner |
09/13/1989 | CN2044389U Digit controlled protector for household appliance |
08/24/1989 | DE3804360A1 Oscillating-armature motor having voltage matching |
08/23/1989 | EP0329513A1 Antitheft device with an IC card for a car radio |
08/23/1989 | CN1035025A Intelligent monitor |
08/17/1989 | DE3803582A1 Mains connection with overvoltage (surge) protection |
08/15/1989 | US4857985 MOS IC reverse battery protection |
08/02/1989 | CN2042249U Fully-automatic protector for domestic appliance |
08/01/1989 | US4853821 Alternating current power sensing device for preventing start-up at power restoration |
07/26/1989 | CN2041864U Power-saving, protective device for household frigidarium |
07/19/1989 | CN2041456U Protector for electric appliances |
06/27/1989 | US4843514 Electrical connection sentry system |
06/15/1989 | DE3741394A1 Circuit arrangement for protecting against polarisation reversal damage for load circuits with an MOSFET as switching transistor |
06/14/1989 | CN2039474U Fully automatic protector for refrigerator |
06/13/1989 | US4839533 Remote safety switch |
06/07/1989 | CN2039074U Multifunctional clock-control protector for refrigerator |
05/09/1989 | US4829457 Overload protection circuit for solid state switch |
05/03/1989 | CN2037115U Highly reliable protector for household refrigerator |
04/25/1989 | US4825328 Three phase electrical load protection device |
04/19/1989 | EP0191046B1 Circuit for continuously controlling the grounding resistance of electric apparatuses |
04/19/1989 | CN2036320U Comprehensive protection electricity saving controller for household refrigerator |
04/19/1989 | CN2036319U Automic protector for refrigerator with electric voltage display |
04/05/1989 | CN1032270A Voltage protector of refrigerator |
03/29/1989 | EP0308478A1 Three-conductor booster cable assembly |
03/22/1989 | CN2034749U Automatic protector for refrigerator |
03/21/1989 | US4814641 Electric safety supply apparatus and connector device combination |
03/08/1989 | EP0305936A2 Mos ic reverse battery protection |
02/08/1989 | CN2032370U Protection socket for refrigerator |
01/31/1989 | US4802053 Control circuitry including phase failure relay |
01/25/1989 | CN2031583U Ic auto-protector for refrigerator |
01/12/1989 | DE3819235A1 Circuit arrangement for monitoring the serviceability of resistive heating elements |
01/12/1989 | DE3819234A1 Circuit arrangement for metrological monitoring of the serviceability of resistive heating elements |
01/03/1989 | US4796152 Multi relay selection control circuit power limiter |
12/28/1988 | EP0297079A1 Control and monitoring system for electric power distribution systems |
11/30/1988 | CN88103295A Passive delay circuit |
11/23/1988 | CN88200719U 电子保安器 Electronic security devices |
10/18/1988 | CA1243396A1 Discharge protecting circuit for a television receiver |
09/22/1988 | DE3707930A1 Output stage drive having a switched-mode regulator |
08/30/1988 | US4767941 Method for error-protected actuation of the switching devices of a switching station and an apparatus thereof |
08/25/1988 | WO1988006364A1 Three-conductor booster cable assembly |