Patents
Patents for H02H 11 - Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result (2,416)
07/1997
07/24/1997CA2243468A1 Connector for consumer networks
07/15/1997US5648739 Switching device having a polarity reversal protection system
06/1997
06/26/1997DE19609219A1 Semiconductor diode circuit arrangement as wrong-polarity protection stage for electronic circuits e.g. for vehicle airbag system
06/24/1997US5642251 Protection circuit for DC supply
06/05/1997DE19602121C1 Current limiting circuit, e.g. for power supply or DC-DC converter
04/1997
04/29/1997US5625518 Clamping circuit with reverse polarity protection
04/23/1997EP0769855A1 Electrical keying circuit for dimmable fluorescent lamps
04/22/1997US5623550 Battery power supply circuit which supplies correct power polarity irrespective of battery orientation
03/1997
03/27/1997DE19638478A1 Overcurrent protection circuit for electric motor drive system
03/25/1997US5614889 Apparatus and methods for coupling a case of an electric appliance to an external ground and for detecting leakage current
03/13/1997DE19533537A1 Storage battery exhaustive discharge protection for uninterruptable power supply (UPS)
03/04/1997US5608598 Effector with self-compensated contacts for power supply of a receiver circuit
02/1997
02/26/1997CN2248414Y 智能保安器 Intelligent security device
01/1997
01/28/1997US5598312 Device for controlling a mechanism driven by a lens one electric motor
12/1996
12/27/1996EP0749628A1 Device for monitoring the operation safety of power switches (diagnosis apparatus)
12/17/1996US5585990 Electronic motor protection apparatus
12/11/1996CN2242533Y Emergency protective circuit arrangement specially adapted for high voltage or low voltage generator
12/05/1996DE19518318A1 Electrical cable test and protection relay appts. for control of cable to electronic assembly part
11/1996
11/28/1996WO1996037939A1 Electrical fault interrupt with frayed cord protection
11/28/1996CA2222216A1 Electrical fault interrupt with frayed cord protection
11/26/1996CA2054486C Reservation and interlocking in the operation of electric switching devices
11/20/1996CN1136170A Checking device for wrong wire distribution of power supply
11/19/1996US5576512 Thermoelectric apparatus for use with multiple power sources and method of operation
11/12/1996US5574632 Power supply comprising a circuit for limiting inrush currents
10/1996
10/31/1996DE19616851A1 Safety device for preventing inadvertent power supply to electrical equipment e.g. power drill
10/29/1996US5570257 Phase sequence wiring protection apparatus
10/23/1996EP0739074A2 Power source miswiring detection apparatus
10/15/1996US5565810 Switch with a first switching element in the form of a bipolar transistor
10/09/1996EP0736950A1 Device for protecting electronic circuits against supply battery disconnection (load dump) and/or overvoltages in the electrical supply circuit of motor vehicles
09/1996
09/24/1996US5559657 Earth fault circuit breaker
09/18/1996EP0732792A2 Protection against accidental contact for two power supply lines connected to a common load
09/18/1996EP0653111B1 Reverse-polarity protection by means of a protecting element having a reduced surface
09/12/1996WO1996027932A1 Power supply circuit and corresponding mounting configuration
09/10/1996US5555483 For use with a recreational vehicle
09/05/1996DE19506074A1 Circuit to protect vehicle components from inadvertent reversal of battery polarity or from negative voltage spikes
08/1996
08/29/1996DE19603117A1 Polarity reversal protection circuit e.g. for battery or other DC source
08/28/1996EP0540634B1 Process control instrument with loop overcurrent circuit
08/20/1996US5548464 Electronic motor protection apparatus
08/20/1996US5548462 Protective circuit
08/13/1996US5546264 Reverse voltage protection circuit
07/1996
07/31/1996CN2232168Y Ground safety device
07/25/1996DE19501985A1 Protection of motor vehicle electronic circuit against reversal of supply polarity
07/23/1996US5539610 Floating drive technique for reverse battery protection
07/09/1996US5535082 Turn-on control circuit for electric devices
07/09/1996US5534782 Automatic reclosing circuit breaker using controllable feeder transducer
07/02/1996US5532898 Line current protection circuit for use with a PCMCIA-architecture modem card
07/02/1996US5532894 Overvoltage protection circuit
06/1996
06/25/1996US5530611 Photo chopper circuit with fail-safe means
06/05/1996EP0715387A1 Extension cord with multiple sockets and integrated control device for switching the sockets on and off
05/1996
05/21/1996US5519559 Electronic connection device with reverse polarity protection
05/21/1996US5519557 Power supply polarity reversal protection circuit
05/14/1996US5517379 Reverse battery protection device containing power MOSFET
05/08/1996EP0711014A1 Protective circuit for the power supply and method of use
05/05/1996CA2162101A1 Protection circuit for dc supply
04/1996
04/17/1996EP0653110B1 Reverse-polarity protection with reduced element surface
03/1996
03/21/1996WO1996008861A1 Power accessory device
03/21/1996DE4433045A1 Electronic circuit for commercial vehicle airbag system
03/13/1996CN1118530A Overvoltage protection circuit
03/12/1996US5499187 Voltage sensing, autoselecting aircraft power supply interface
02/1996
02/07/1996CN2219556Y Safety leader circuit controller
01/1996
01/18/1996DE19525112A1 Electronic connector with polarity reversal protection
01/17/1996EP0692925A2 Overvoltage protection circuit
01/16/1996US5485339 Safety electrical assembly for electric power equipment
01/10/1996CN2217277Y Built-in type arrangement for protection of electricity interruption
01/02/1996US5481211 Automatic polarity switching output circuit
12/1995
12/13/1995EP0686953A1 LED indicator with low operating voltage and high over-voltage tolerance
12/08/1995CA2150638A1 Led indicator with low operating voltage and high over-voltage tolerance
12/06/1995EP0685916A2 Power supply protection circuit capable of preventing a failure in a mobile satellite communication apparatus resulting from erroneous connection
11/1995
11/14/1995US5467248 Relay control circuit
11/14/1995US5467240 Driver circuit with diagnostics and over voltage protection
10/1995
10/31/1995CA1337493C Actuator two-fault tolerance apparatus
10/18/1995EP0677908A2 Apparatus for automatically coupling an internal ground to an external ground
10/17/1995US5459358 Method and apparatus for randomly delayed activation of electrical loads
10/11/1995EP0676846A2 Switch with a bipolar transistor as first switching element
09/1995
09/19/1995US5451848 Motor drive circuit
09/14/1995WO1995024725A1 Device for monitoring the operation safety of power switches (diagnosis apparatus)
09/14/1995CA2185017A1 Device for monitoring the operational safety of power switches (diagnostic apparatus)
09/13/1995CN2207654Y High voltage earthing protective implement
09/12/1995US5450001 Process and device for safeguarding an alternating current circuit having an electrical load associated therewith
09/06/1995CN2207019Y Safety protection device of power socket
08/1995
08/16/1995EP0667666A1 Power supply comprising a ciruit for limiting inrush currents
08/09/1995CN1106568A Earth fault circuit breaker
07/1995
07/18/1995US5434739 Reverse battery protection circuit
07/05/1995EP0661789A2 Phase sequence wiring protection apparatus
05/1995
05/23/1995US5418678 Manually set ground fault circuit interrupter
05/17/1995EP0653111A1 Reverse-polarity protection by means of a protecting element having a reduced surface.
05/17/1995EP0653110A1 Reverse-polarity protection with reduced element surface.
05/04/1995DE4412274C1 Switch with a first switch element constructed as bipolar transistor
04/1995
04/25/1995US5410441 Circuit for protecting DC powered devices from improper supply voltages
02/1995
02/21/1995US5391948 Surge-resistant protection circuit for vehicle
02/09/1995DE4326423A1 Method for decoupling a load from a DC voltage supply source, as well as an arrangement
02/08/1995EP0637866A1 A control and protection device for an electric system
01/1995
01/25/1995EP0635170A1 Electric vehicle drive train with contactor protection
01/18/1995EP0634826A1 Earth fault circuit breaker
12/1994
12/20/1994US5375032 Trip control device for circuit breaker
12/16/1994CA2125799A1 Earth fault circuit breaker
12/14/1994EP0629031A2 Reverse battery protection circuit
11/1994
11/30/1994EP0626745A2 Floating drive technique for reverse battery protection
11/29/1994US5369540 Electric vehicle drive train with contactor protection
10/1994
10/26/1994EP0621674A1 Effector with self-compensating contacts for the supply of a load circuit
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