GB2236193A - Voltage indication apparatus - Google Patents

Voltage indication apparatus

Info

Publication number
GB2236193A
GB2236193A GB9019708A GB9019708A GB2236193A GB 2236193 A GB2236193 A GB 2236193A GB 9019708 A GB9019708 A GB 9019708A GB 9019708 A GB9019708 A GB 9019708A GB 2236193 A GB2236193 A GB 2236193A
Authority
GB
United Kingdom
Prior art keywords
voltage
light
emitting diode
test probe
centre tap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9019708A
Other versions
GB9019708D0 (en
Inventor
Richard Woodcraft
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB9019708D0 publication Critical patent/GB9019708D0/en
Publication of GB2236193A publication Critical patent/GB2236193A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/155—Indicating the presence of voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/14—Indicating direction of current; Indicating polarity of voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Recording Measured Values (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

Voltage indication apparatus (10) is disclosed including a first Light-Emitting Diodes (16) and a second Light-Emitting Diode (17) attached in parallel opposed relationship between a test probe (18) and a centre tap (13) on a voltage divider formed from a pair of resistors (11 and 12), the latter being terminated by alligator clips (14 and 15) which may be connected to the power rails of a circuit to be tested. During testing, current passes through and illuminates the first Light-Emitting Diode (16) if the test probe (18) is connected to a voltage between the voltage at the centre tap (13), which is typically half of the voltage between the power rails, and the voltage of the negative power rail. If the test probe (18) is connected to a voltage between the voltage at the centre tap (13) and the positive power rail, the second Light-Emitting Diode (17) will be illuminated. The apparatus is not polarised, and the alligator clips (14 and 15) may be connected to either power rail.
GB9019708A 1988-01-04 1990-09-03 Voltage indication apparatus Withdrawn GB2236193A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPI615488 1988-01-04
PCT/AU1989/000001 WO1989006365A1 (en) 1988-01-04 1989-01-03 Voltage indication apparatus

Publications (2)

Publication Number Publication Date
GB9019708D0 GB9019708D0 (en) 1990-11-21
GB2236193A true GB2236193A (en) 1991-03-27

Family

ID=3772697

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9019708A Withdrawn GB2236193A (en) 1988-01-04 1990-09-03 Voltage indication apparatus

Country Status (3)

Country Link
AU (1) AU611760B2 (en)
GB (1) GB2236193A (en)
WO (1) WO1989006365A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3912923A1 (en) * 1989-04-20 1990-11-08 Daimler Benz Ag Test device for revealing live conductor and polarity - has hand-held indicator unit requiring only one application of test prod. to determine voltage presence and direction
US5270638A (en) * 1991-10-08 1993-12-14 Mac Tools, Inc. Probe device for testing polarity of a power supply and polarity of test element with respect to the power supply
US5572143A (en) * 1993-10-19 1996-11-05 Mac Tools, Inc. Circuit testing device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860868A (en) * 1973-09-26 1975-01-14 Joseph S Lindell Voltage polarity sensor indicator and director circuit device
US4028621A (en) * 1975-12-18 1977-06-07 Bloxam James M Portable automotive test probe
US4210862A (en) * 1977-04-21 1980-07-01 Siemens Aktiengesellschaft Test device for indicating an electric voltage and/or the polarity thereof, and the passage of current through an electric conductor
US4233560A (en) * 1978-08-24 1980-11-11 Blenman Orman L Electrical apparatus for testing voltage, polarity and continuity
US4301407A (en) * 1978-10-26 1981-11-17 Siemens Aktiengesellschaft Hand held testing device for indicating an electric test voltage
US4366434A (en) * 1978-03-22 1982-12-28 Tony Ellis Voltage detectors and electrical continuity checkers
GB2128344A (en) * 1982-09-30 1984-04-26 Ford Motor Co Voltage sensor device
AU3820185A (en) * 1985-01-24 1985-09-26 Maurice Glover Electrical parameter test unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806803A (en) * 1973-06-06 1974-04-23 Gen Tel Co Of Cal Portable voltage sampling probe device
JPS56166473A (en) * 1980-05-28 1981-12-21 Oki Electric Ind Co Ltd Level meter circuit

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3860868A (en) * 1973-09-26 1975-01-14 Joseph S Lindell Voltage polarity sensor indicator and director circuit device
US4028621A (en) * 1975-12-18 1977-06-07 Bloxam James M Portable automotive test probe
US4210862A (en) * 1977-04-21 1980-07-01 Siemens Aktiengesellschaft Test device for indicating an electric voltage and/or the polarity thereof, and the passage of current through an electric conductor
US4366434A (en) * 1978-03-22 1982-12-28 Tony Ellis Voltage detectors and electrical continuity checkers
US4233560A (en) * 1978-08-24 1980-11-11 Blenman Orman L Electrical apparatus for testing voltage, polarity and continuity
US4301407A (en) * 1978-10-26 1981-11-17 Siemens Aktiengesellschaft Hand held testing device for indicating an electric test voltage
GB2128344A (en) * 1982-09-30 1984-04-26 Ford Motor Co Voltage sensor device
AU3820185A (en) * 1985-01-24 1985-09-26 Maurice Glover Electrical parameter test unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Patents Abstracts of Japan,P109, page 9,JP56-166473A (OKI DENKI KOGYO KK), 21 December 1981. *

Also Published As

Publication number Publication date
WO1989006365A1 (en) 1989-07-13
AU611760B2 (en) 1991-06-20
AU2916989A (en) 1989-08-01
GB9019708D0 (en) 1990-11-21

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)