| Patents for G01R 19 - Arrangements for measuring currents or voltages or for indicating presence or sign thereof (29,850) |
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| 07/06/2005 | CN1635383A Low power consumption and low temperature drift voltage detection circuit independent from technique |
| 07/06/2005 | CN1635382A 负压声音感应器 Negative sound sensors |
| 07/06/2005 | CN1209867C Method and apparatus for phase current test of inverter controller using single sensor |
| 07/05/2005 | US6915219 Method for canceling transient errors in unsynchronized digital current differential transmission line protection systems |
| 07/05/2005 | US6914451 Adaptive level binary logic |
| 07/05/2005 | US6914439 Capacitive test point voltage and phasing detector |
| 07/05/2005 | US6914434 Driver circuit |
| 07/05/2005 | US6914425 Measurement circuit with improved accuracy |
| 07/05/2005 | US6914422 Current monitoring/control circuit |
| 07/05/2005 | US6914409 Current detection method and control apparatus for electric motor |
| 06/30/2005 | WO2005059580A1 Method and assembly for testing a power output stage |
| 06/30/2005 | WO2005059573A1 Current measuring equipment and power supply comprising it |
| 06/30/2005 | US20050140427 Comparator circuit and power supply circuit |
| 06/30/2005 | US20050140396 Detecting peak signals |
| 06/30/2005 | US20050140395 Overvoltage detector |
| 06/30/2005 | DE202005006380U1 Monitoring device for functioning of DC voltage loads e.g. in vehicles, provides fault message when current falls below pre-set threshold |
| 06/29/2005 | EP1547117A2 Transducer package for process control |
| 06/29/2005 | EP1173774B1 Current sensor working in accordance with the compensation principle |
| 06/29/2005 | CN2706888Y Intelligent speech alarm short circuit grounding wire |
| 06/29/2005 | CN2706767Y Lightning recorder |
| 06/29/2005 | CN1632602A Electric network geomagnetic induction current monitoring method and apparatus |
| 06/29/2005 | CN1632599A Phase modulation based optical fiber voltage measurement device |
| 06/29/2005 | CN1632598A Intelligent lightning environment monitoring installation |
| 06/29/2005 | CN1632597A Clock signal amplitude detecting method and circuit |
| 06/29/2005 | CN1208625C Digital method for measuring real effective value of AC electric quantity |
| 06/23/2005 | WO2005057228A1 Ionization test for electrical verification |
| 06/23/2005 | US20050138432 System and method for routing power management via XML firewall |
| 06/23/2005 | US20050135130 Device for detection of power-off |
| 06/23/2005 | US20050134327 High Speed signal level detector |
| 06/23/2005 | US20050134326 Voltage detection circuit, semiconductor device, method for controlling voltage detection circuit |
| 06/23/2005 | US20050134246 Voltage generation circuit |
| 06/23/2005 | DE202005001815U1 Electronic unit supply voltage monitoring unit for rail vehicle use has several transient monitoring stages that trigger series connected fine security circuits with microcomputer recording |
| 06/22/2005 | EP1544703A1 Current sensing circuit for DC/DC buck converters |
| 06/22/2005 | EP1544042A1 Control circuit for controlling the supply of power to hazard warning lamps |
| 06/22/2005 | EP1543336A1 Electrical panel safety monitor |
| 06/22/2005 | EP1543335A1 Passive indicator of voltage presence |
| 06/22/2005 | EP1327306A4 Current sense ic |
| 06/22/2005 | CN2705934Y Digital display battery charger |
| 06/22/2005 | CN1630186A Voltage generation circuit |
| 06/22/2005 | CN1629644A Insulated electric resistant testing method |
| 06/22/2005 | CN1207943C Method and device for radio frequency metering |
| 06/21/2005 | US6909372 Power monitoring unit, control method therefor, and exposure apparatus |
| 06/21/2005 | US6909289 Electrical high tension tester |
| 06/16/2005 | WO2005054882A1 Failsafe for differential circuit based on current sense scheme |
| 06/16/2005 | WO2005029101A3 Method and system for verifying voltage in an electrical system |
| 06/16/2005 | US20050128020 Ultrafast sampler with non-parallel shockline |
| 06/16/2005 | US20050127994 Wireless Output Chip With Power Detector And Related Manufacturing Method |
| 06/16/2005 | US20050127986 Squaring cells and multipliers using summed exponentials |
| 06/16/2005 | US20050127921 Voltage detecting circuit |
| 06/16/2005 | US20050127888 Current sensing circuit for DC/DC buck converters |
| 06/16/2005 | DE10350596A1 Comparator for comparing an incoming signal with a threshold value has differential switching elements along with devices to supply an adjusting current with different steady rate characteristics |
| 06/16/2005 | DE10246383B4 Verfahren und Einrichtung zum Berechnen des Ladewirkungsgrads und der elektrischen Ladungsmenge einer Batterie Method and apparatus for calculating the charging efficiency and the amount of electric charge of a battery |
| 06/16/2005 | DE102004023084B3 Supply voltage monitoring method e.g. for motor vehicle control appliances, involves comparing actual voltage with given lower voltage threshold |
| 06/15/2005 | EP1542025A1 Magnetic bridge type current sensor, magnetic bridge type current detecting method, and magnetic bridge for use in that sensor and detecting method |
| 06/15/2005 | EP1297347A4 Apparatus and method for the measurement and monitoring of electrical power generation and transmission |
| 06/15/2005 | EP0978169B1 An arrangement in a subscriber line interface circuit |
| 06/15/2005 | CN2704853Y Current sampling circuit of digital AC servo driving system |
| 06/15/2005 | CN2704852Y AC/DC appliances fault inspecting tool |
| 06/15/2005 | CN2704851Y Active electric cable identifiers |
| 06/15/2005 | CN1627090A A circuit structure capable of automatic adjusting and measuring hysteresis window of hysteresis comparator |
| 06/15/2005 | CN1206539C Measuring system for measuring power line characteristics |
| 06/14/2005 | US6906617 Intelligent appliance home network |
| 06/14/2005 | US6906557 Fuse sense circuit |
| 06/14/2005 | US6906498 Device and method for the detection of a charging voltage |
| 06/09/2005 | WO2005052617A1 Diagnosis unit for a current supply and current supply provided with said diagnosis unit |
| 06/09/2005 | WO2005052606A1 Digital qp detecting apparatus, spectrum analyzer having the same, and digital qp detecting method |
| 06/09/2005 | WO2005052604A1 Portable electric testing equipment |
| 06/09/2005 | US20050122138 Power supplies noise detector for integrated circuits |
| 06/09/2005 | US20050122137 High speed peak amplitude comparator |
| 06/09/2005 | US20050122077 Cost-effective measurement of large machine currents |
| 06/09/2005 | DE10349462A1 Installationsgerät mit überprüftem Potentiometer und entsprechendes Überprüfungsverfahren Installation device with checked potentiometer and appropriate review procedures |
| 06/09/2005 | DE102004041901A1 Spannungsdetektor einer Batterieanordnung Voltage detecting a battery assembly |
| 06/08/2005 | CN1625692A Measured value output device, measured value monitor, current value output device, and current monitor |
| 06/08/2005 | CN1624486A 电压检测电路 Voltage detection circuit |
| 06/08/2005 | CN1205719C Charge/discharge control circuit and rechargeable power supply equipment |
| 06/08/2005 | CN1205481C Voltage measuring device |
| 06/02/2005 | WO2005050828A2 Inductor-based current sensing |
| 06/02/2005 | WO2005049366A1 Abnormality monitoring apparatus in load drive circuit |
| 06/02/2005 | WO2005032016A3 Rapid exchange mounting system for testing wireless networks |
| 06/02/2005 | US20050118029 Apparatus and method for detecting fault of cooling fan |
| 06/02/2005 | US20050116699 Inductor-based current sensing |
| 06/02/2005 | DE10350665A1 Inductive current measurement circuit for switched mode power supplies uses negative impedance differential input operational amplifier in shunt inductance resistor circuit |
| 06/01/2005 | EP1535819A1 Device for secure measurements and detection of an electric current for a safety device |
| 06/01/2005 | CN1623095A Ac signal level detection circuit |
| 06/01/2005 | CN1204686C Power level detecting circuit |
| 05/31/2005 | US6901339 Eye diagram analyzer correctly samples low dv/dt voltages |
| 05/31/2005 | US6901336 Method and apparatus for supplying power, and channeling analog measurement and communication signals over single pair of wires |
| 05/31/2005 | US6900710 Ultrafast sampler with non-parallel shockline |
| 05/31/2005 | US6900668 High speed single ended sense amplifier with built-in multiplexer |
| 05/26/2005 | WO2005047910A1 Method and device for measuring radio interference levels with frequency tracking |
| 05/26/2005 | WO2005029104A8 Electronic switching circuit, switching circuit test arrangement and method for determining the operativeness of an electronic switching circuit |
| 05/26/2005 | US20050114057 Method for power quality summary and trending |
| 05/26/2005 | US20050110527 High speed single ended sense amplifier with built-in multiplexer |
| 05/26/2005 | US20050110515 Failsafe for differential circuit based on current sense scheme |
| 05/26/2005 | US20050110497 Spark detection apparatus and method that senses the battery voltage |
| 05/26/2005 | US20050110480 System and method for acquiring voltages and measuring voltage into an electrical service using a non-active current transformer |
| 05/25/2005 | EP1533623A2 Method of detecting a branch with an earth fault |
| 05/25/2005 | EP1386347A4 Microelectromechanical system (mens) device |
| 05/25/2005 | DE10359235B3 Testing power end stages involves switching semiconductor switches sequentially or simultaneously into conducting state, checking voltage at star point of motor windings against tolerance range to detecting end stage fault |
| 05/25/2005 | DE10350063A1 Radio interference levels measuring method e.g. for RF circuits, involves measuring level of signal and in each case with limit value compared and during excess of limit value by measuring level, respective measuring frequency is marked |