GB2224579A - Fuse tester - Google Patents

Fuse tester Download PDF

Info

Publication number
GB2224579A
GB2224579A GB8815149A GB8815149A GB2224579A GB 2224579 A GB2224579 A GB 2224579A GB 8815149 A GB8815149 A GB 8815149A GB 8815149 A GB8815149 A GB 8815149A GB 2224579 A GB2224579 A GB 2224579A
Authority
GB
United Kingdom
Prior art keywords
fuse
light
contact point
finger
diode
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.)
Granted
Application number
GB8815149A
Other versions
GB8815149D0 (en
GB2224579B (en
Inventor
Jeff Thomas
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
Priority to GB8815149A priority Critical patent/GB2224579B/en
Publication of GB8815149D0 publication Critical patent/GB8815149D0/en
Publication of GB2224579A publication Critical patent/GB2224579A/en
Application granted granted Critical
Publication of GB2224579B publication Critical patent/GB2224579B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H2085/0216—Tools for controlling fuses or the line associated with the fuses

Abstract

A fuse tester comprises a metal contact point C which is connected in series to a light emitting diode B which is connected through a current limiting resistance R to the electric mains supply L. Placing a finger on the contact point will light the diode. Holding one end of a good fuse against the contact point will also light the diode. The hand holding the other metal end of the fuse completes the circuit. The fuse tester may be provided as an addition to other electrical apparatus such as light switches, plug sockets or plugs. <IMAGE>

Description

ARRANGEMENT FOR TESTING FUSES This patent is an arrangement for testing fuses that uses only one contact point. As compared with previous fuse testers that use two contact points, it is simpler both to make and to use.
The arrangement may be supplied on its own or preferably in conjunction with a standard piece of electrical domestic equipment such as a light switch or plug socket, or plug.
The main use for the arrangement will be to test domestic fuses that fit in 13 amp plugs.
The invention consists of a current limiting resistance that is connected to the Live Mains (240v) electric supply (A).
A light-emitting diode (B) that is visible which is connected to the current limiting resistance and a (metal) surface point of contact (C).
To test a fuse all that needs to be done is first to place a finger on the contact point to see the diode light up. Next to hold the fuse by one metal end and put the other end on the contact point.
If the diode lights then the fuse is good. If the diode does not light, the fuse has blown.
This invention is illustrated as it would be used on a domestic light switch (Figure A). (A), (B) and (C) above are shown on the drawing.
ARRANGEMENT FOR TESTING FUSES My claim for my invention is that the arrangement described provides a very simple one contact point tester for fuses, especially domestic 13 amp plug fuses.
I claim that this is a very significant improvement over the normal two point contact testers.
In my invention the continuity of the current is provided through the hand holding the fuse. The tester is both simpler to make and to use.

Claims (1)

  1. Claims
    I hereby claim any arrangement that provides an electrical contact point that can be made to form a stable connection to a live mains terminal or battery terminal in a such a Wa that placing a finger against the contact points ( either directly or through d fuse to be tested) wili cause a display light to light up when a small current passing trough the finger is detected so as to indicate that the circuit is live. The current passing through the finger may be insufficient to be noticable.
GB8815149A 1988-06-24 1988-06-24 Arrangement for testing fuses Expired - Lifetime GB2224579B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8815149A GB2224579B (en) 1988-06-24 1988-06-24 Arrangement for testing fuses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8815149A GB2224579B (en) 1988-06-24 1988-06-24 Arrangement for testing fuses

Publications (3)

Publication Number Publication Date
GB8815149D0 GB8815149D0 (en) 1988-08-03
GB2224579A true GB2224579A (en) 1990-05-09
GB2224579B GB2224579B (en) 1992-09-16

Family

ID=10639347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8815149A Expired - Lifetime GB2224579B (en) 1988-06-24 1988-06-24 Arrangement for testing fuses

Country Status (1)

Country Link
GB (1) GB2224579B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249638A (en) * 1990-06-15 1992-05-13 Leslie Jamieson Testing electric lamp circuits
US5453683A (en) * 1993-09-16 1995-09-26 Pagano; Biagio Continuity tester
CN101408584B (en) * 2008-10-09 2011-07-27 艾默生网络能源有限公司 Apparatus for detecting multiplex fuse wire signal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2032120A (en) * 1978-10-17 1980-04-30 Haslam J D Voltage tester
GB1573080A (en) * 1978-03-22 1980-08-13 Ellis T Voltage detectors and electrical continuity testers
GB2164455A (en) * 1984-07-26 1986-03-19 Porsche Ag An arrangement for testing fuses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573080A (en) * 1978-03-22 1980-08-13 Ellis T Voltage detectors and electrical continuity testers
GB2032120A (en) * 1978-10-17 1980-04-30 Haslam J D Voltage tester
GB2164455A (en) * 1984-07-26 1986-03-19 Porsche Ag An arrangement for testing fuses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2249638A (en) * 1990-06-15 1992-05-13 Leslie Jamieson Testing electric lamp circuits
US5453683A (en) * 1993-09-16 1995-09-26 Pagano; Biagio Continuity tester
CN101408584B (en) * 2008-10-09 2011-07-27 艾默生网络能源有限公司 Apparatus for detecting multiplex fuse wire signal

Also Published As

Publication number Publication date
GB8815149D0 (en) 1988-08-03
GB2224579B (en) 1992-09-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940624