Patent International Class: G01R 19/155

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Method for ensuring and monitoring electrolyzer safety and performances
Inventor: Tremblay, et al. | Patent Number: 8152987

Combined test instrument probe and voltage detector
Inventor: Cavoretto | Patent Number: 7242173

System and method for measuring electric current in a pipeline
Inventor: Pots, et al. | Patent Number: 7104147

Apparatus for accessing telecommunications networks
Inventor: Urban, et al. | Patent Number: 6886432

Voltage detection circuit, power-on/off reset circuit, and semiconductor device
Inventor: Hirano, et al. | Patent Number: 6882193

Combination hand tool and electrical testing device
Inventor: Simon, et al. | Patent Number: 6848139

Hand-held voltage detection probe
Inventor: Douglas | Patent Number: 6828767

Voltage detection circuit, power-on/off reset circuit, and semiconductor device
Inventor: Hirano, et al. | Patent Number: 6822493

Distributed emergency lighting system having self-testing and diagnostic capabilities
Inventor: Appelberg, et al. | Patent Number: 6788000

Electrical safety device
Inventor: Irvine, et al. | Patent Number: 6717293

Electrical panel safety monitor
Inventor: Clarke | Patent Number: 6703938

Alternating voltage detector
Inventor: Beha | Patent Number: 6653826

Circuit test light
Inventor: Wollert | Patent Number: 6577116

Voltage detection circuit, power-on/off reset circuit, and semiconductor device
Inventor: Hirano, et al. | Patent Number: 6538482

Voltage detection stick
Inventor: Bystrom, et al. | Patent Number: 6424139

Test device for electrical voltages with integrated illumination unit
Inventor: Beha | Patent Number: 6377054

Apparatus for detecting earthed side of AC power Supply
Inventor: Ikake | Patent Number: 6337569

High voltage sensor assembly
Inventor: Noll | Patent Number: 6313635

Voltage detection circuit power-on/off reset circuit and semiconductor device
Inventor: Hirano, et al. | Patent Number: 6246624

Alarm apparatus
Inventor: Lloyd-Jones, et al. | Patent Number: 6229446

Voltage and continuity tester
Inventor: Johnson | Patent Number: 6201385

Automatic power turn-on circuit for a battery-powered voltage measurement apparatus
Inventor: Gallavan | Patent Number: 6201320

High bandwidth mean absolute value signal detector with hysteresis and tunability
Inventor: Baumgartner, et al. | Patent Number: 6177815

Multiport power monitor
Inventor: McDonald | Patent Number: 6169491

Line card loss of battery detector
Inventor: De La Rosa, et al. | Patent Number: 6166547

Fast AC sensor for detecting power outages
Inventor: Mantov | Patent Number: 6163204

Insulated electrostatic voltage indicator
Inventor: Atherton | Patent Number: 6157184

Voltage indicating instrument
Inventor: McCasland | Patent Number: 6100679

Circuit tester
Inventor: Marshall | Patent Number: 6020822

Voltage indicator using serial comparison voltage measurement
Inventor: Gallavan | Patent Number: 5998985

Foreign voltage detector
Inventor: Thrasher, et al. | Patent Number: 5952820

Hand held non-contact voltage tester
Inventor: Luebke, et al. | Patent Number: 5877618

Power cable voltage tester
Inventor: Malenko, et al. | Patent Number: 5867019

Voltage detection circuit, power-on/off reset circuit, and semiconductor device
Inventor: Hirano, et al. | Patent Number: 5864247

Single-pole voltage detector, in particular for overhead electrical lines
Inventor: Bouchez | Patent Number: 5814997

Power failure alarm
Inventor: Sanders, et al. | Patent Number: 5663711

Battery monitor for unobstrusive installation with a battery connector
Inventor: Foreman, et al. | Patent Number: 5590058

Circuit testing device
Inventor: Myers, et al. | Patent Number: 5572143

Defibrillator charge tester
Inventor: Lemole | Patent Number: 5554173

Missing phase detector
Inventor: Smith | Patent Number: 5548207

Off-line controller having a line voltage detector and a switched current bootstrap circuit
Inventor: Khayat | Patent Number: 5532626

Assembly and associated method for locating a selected wire of a wiremat
Inventor: Boudreaux | Patent Number: 5512819

Method and apparatus for testing for a high voltage on the chassis of an electronic apparatus
Inventor: Winter | Patent Number: 5469063

Instrument for testing and/or measuring electric magnitudes
Inventor: Beha | Patent Number: 5448162

Method and structure for a fault-free input configuration control mechanism
Inventor: Reggiardo | Patent Number: 5446399

High voltage phasing detector
Inventor: Binnie | Patent Number: 5438255

Double positive feedback loop precharge CMOS single-ended sense amplifier
Inventor: Lai | Patent Number: 5426385

Circuit test device for detecting the presence of an electric current in a conductor
Inventor: Vazquez | Patent Number: 5424630

Non-contact apparatus for sensing energization of high voltage signal line
Inventor: Chinn | Patent Number: 5414344

Input module
Inventor: Herman | Patent Number: 5398025

Power fail detection circuit
Inventor: Baily | Patent Number: 5376920

Power-on detecting circuit
Inventor: Sakamoto | Patent Number: 5374923

Tool for grasping and piercing insulated electrical cable for determining whether conductor of cable is energized
Inventor: McTigue | Patent Number: 5367251

Apparatus for detecting a completed electrical circuit at an electrical output receptacle
Inventor: Sheldon | Patent Number: 5331283

Sense amplifier circuit for reducing transmission delay in data line
Inventor: Urakawa | Patent Number: 5331233

Concealed wire tracing apparatus
Inventor: Kronberg | Patent Number: 5317253

Electrical apparatus for detecting relationships in three phase AC networks
Inventor: Ryba | Patent Number: 5298853

Electrical contact avoidance device
Inventor: Hanrahan, et al. | Patent Number: 5296844

Hot line mountable hotline indicator having liquid crystal display with resettable memory function
Inventor: Schweitzer, Jr. | Patent Number: 5274324

Telecommunications signal detector
Inventor: Fitzpatrick | Patent Number: 5185570

Telecommunications signal detector
Inventor: Fitzpatrick | Patent Number: 5185570

Voltage detecting device
Inventor: Takahashi, et al. | Patent Number: 5164667

Circuit arrangement for monitoring two operating voltages
Inventor: Schemmel | Patent Number: 5121108

Method and electrical measuring apparatus for analyzing the impedance of the source of an actual alternating voltage
Inventor: Ross | Patent Number: 5105181

Circuit status indicator having liquid crystal display
Inventor: Schweitzer, Jr. | Patent Number: 5095265

High impedance voltage indicator having capacitive voltage divider
Inventor: Schweitzer, Jr. | Patent Number: 5077520

Voltage pickup circuit and flashing display for high voltage indicator device, and input electrode therefor
Inventor: Green | Patent Number: 5065142

High voltage indicator device
Inventor: Neuhouser | Patent Number: 5051733

Voltage detection
Inventor: Reeves | Patent Number: 5034681

Input condition sensing circuit
Inventor: Mageland, et al. | Patent Number: 5027057

Circuit for measuring the dynamic characteristics of a package for high-speed integrated circuits and a method for measuring said dynamic characteristics
Inventor: Gloanec, et al. | Patent Number: 5025212

Voltage testing device for electric tooth-brush
Inventor: Hukuba | Patent Number: 5003250

Electrical power detection and indication device
Inventor: Bird | Patent Number: 5003249

Voltage detecting device
Inventor: Takahashi, et al. | Patent Number: 4982152

Substrate potential detecting circuit
Inventor: Muroga | Patent Number: 4980745

Voltage detecting device
Inventor: Aoshima, et al. | Patent Number: 4973900

Audible circuit tracer
Inventor: Schmiemann | Patent Number: 4945346

Voltage detector for detecting a voltage developing in a selected area of an object
Inventor: Takahashi, et al. | Patent Number: 4887026

Apparatus for testing multiphase outlet with visual indication of phase energization, phase rotation, and supply voltage
Inventor: Macey | Patent Number: 4885532

Zero-phase-sequence voltage sensing apparatus
Inventor: Sometani, et al. | Patent Number: 4879509

Electro-optic signal measurement
Inventor: Williamson | Patent Number: 4873485

High voltage detector
Inventor: Dooley, et al. | Patent Number: 4870343

Voltage detector employing electro-optic material having a corner-cube shape
Inventor: Aoshima, et al. | Patent Number: 4864222

Multi-function tester
Inventor: Whitley | Patent Number: 4859932

Dynamic sense amplifier for CMOS static RAM
Inventor: Galbraith | Patent Number: 4843264

Remote measurement of high voltage AC with radar
Inventor: Hasenzahl | Patent Number: 4837503

Voltage and continuity tester
Inventor: Sirasud | Patent Number: 4825150

Device for A.C. voltage testing using a voltage multiplier and LCD display
Inventor: Mohebban | Patent Number: 4823078

Device for A.C. voltage testing using a voltage multiplier and LCD display
Inventor: Mohebban | Patent Number: 4823078

Potential indicating device
Inventor: Filter, et al. | Patent Number: 4814933

Voltage sensor
Inventor: Sometani, et al. | Patent Number: 4804922

Monitoring circuit for an electric or electronic module
Inventor: Sterler, et al. | Patent Number: 4788446

Amplifier with D.C. compensation
Inventor: Cox | Patent Number: 4785237

Amplifier with D.C. compensation
Inventor: Cox | Patent Number: 4785237

Current sensing alarm arrangement for monitoring the presence of high voltage
Inventor: Chau | Patent Number: 4755805

Transit system third rail warning signal
Inventor: Buyak, et al. | Patent Number: 4736197

Testing instrument for detectlng alternating voltages in mains and alternating electromagnetic fields in the vicinity of voltage-carrying conductors
Inventor: Schauerte | Patent Number: 4724382

Apparatus for indicating proper compensation of an adjustable frequency compensation network
Inventor: Carlton | Patent Number: 4719408

Voltage loss detector
Inventor: Schweitzer, Jr. | Patent Number: 4714916

High voltage protector
Inventor: McDermott | Patent Number: 4713653

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