GB2429788A - Car radio power supply and speaker tester - Google Patents

Car radio power supply and speaker tester Download PDF

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Publication number
GB2429788A
GB2429788A GB0517730A GB0517730A GB2429788A GB 2429788 A GB2429788 A GB 2429788A GB 0517730 A GB0517730 A GB 0517730A GB 0517730 A GB0517730 A GB 0517730A GB 2429788 A GB2429788 A GB 2429788A
Authority
GB
United Kingdom
Prior art keywords
supply
speaker
tester
car radio
power supply
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Withdrawn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
GB0517730A
Other versions
GB0517730D0 (en
Inventor
Mark Anthony Morton
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 GB0517730A priority Critical patent/GB2429788A/en
Publication of GB0517730D0 publication Critical patent/GB0517730D0/en
Publication of GB2429788A publication Critical patent/GB2429788A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • 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
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

A car radio tester comprises a box 4 and light emitting diodes (LED) that can indicate faults of wiring connection to speakers 14,16,26,28, negative supply 18, permanent supply 22 accessory supply 20 and illumination 24. The radio testing apparatus may also comprise a socket 8 to mate with a plug (fig 3,10) of the vehicle wiring loom and the socket may be an ISO socket. The circuit of the tester may comprise diodes (fig 4, D1,D2,D3,D4) to enable power to be drawn from either of an accessory supply or a permanent supply and resistors (fig 4, 100 ohm) in series with speakers and LEDs. When a LED illuminates it indicates a good circuit.

Description

Car radio power supply and speaker tester.
This invention relates to a car radio power supply and speaker tester, when diagnosing car radios it is a must to firstly check the power supplies and / or speakers(for open circuit)before suspecting the car radio is at fault. When fitting a car radio,again it is a must to check the speakers and power supplies as faults could be present and cause a fault to the new radio. A normal scenario would be to probe' or meter' the plugs to find faults.
To cut time in fitting or diagnosing car radios, this self contained box will test everything(FR speaker,FL speaker,RL speaker,RR speaker,Negative supply,permanent supply,accessory supply and illumination) a car radio needs to function by showing the test results via LED's on a easy to read panel,this tester will also help in eliminating intermittent faults by keeping a permanent test on the speakers and power supplies whilst the technician checks the faulty components on the vehicle.
With this box being such a small self contained device it is easy to use and very portable and robust.It also has an easy to read display panel with clear description as to what device is being tested and what is good/faulty.With all components in the tester being cheap and easily accessahie the tester is cheap and easy to make.
An example of the invention will be described by referring to the accompanying drawings.
-figure 1 shows the car radio power supply and speaker tester.
-figure 2 shows an example of how the tester will be used.
-figure 3 (10) shows the speaker and power supply plugs(1S0) which are to be tested and are typical in most uk cars.
-figure 4 shows the schematic diagram of the tester.
This invention consists of 8 LED's, 4 for speaker testing and 4 for power supply testing(see figure 1). The speaker testing part has a lOOohm resistor in series with each speaker(when connected)and an LEDto complete the circuit, when the speaker has continuity the LED illuminates showing a good circuit therefor a good speaker, if the LED fails to illuminate then the circuit is faulty and needs closer investigation. The supply for the speaker test comes from 2 diodes,one from the permanent supply and one from accessory supply so if one supply is missing then the other supply can test the speakers.The power supply LED's each have a lOOohm resistor in series and a common negative to show relevent supply losses and illumination switch

Claims (2)

  1. Claims 1/ A self contained box for testing car radio speaker and power
    supplys needing no external power supplies.
    2/ As claim 1 is fitted with B LED's showing each component that is being tested.
    3/ As claim 2 has an ISO socket fitted on the front face of the box.
  2. 2.
GB0517730A 2005-08-31 2005-08-31 Car radio power supply and speaker tester Withdrawn GB2429788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0517730A GB2429788A (en) 2005-08-31 2005-08-31 Car radio power supply and speaker tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0517730A GB2429788A (en) 2005-08-31 2005-08-31 Car radio power supply and speaker tester

Publications (2)

Publication Number Publication Date
GB0517730D0 GB0517730D0 (en) 2005-10-12
GB2429788A true GB2429788A (en) 2007-03-07

Family

ID=35220624

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0517730A Withdrawn GB2429788A (en) 2005-08-31 2005-08-31 Car radio power supply and speaker tester

Country Status (1)

Country Link
GB (1) GB2429788A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110571A (en) * 1977-11-25 1978-08-29 Jimmy's Radio & Television Corporation Test unit for stereophonic speaker systems
JPH052045A (en) * 1991-06-25 1993-01-08 Onkyo Sokki Kk Vehicle-borne inspecting apparatus
WO2001027643A1 (en) * 1999-10-12 2001-04-19 Henry William Sybesma Automotive harness and audio system analyzer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110571A (en) * 1977-11-25 1978-08-29 Jimmy's Radio & Television Corporation Test unit for stereophonic speaker systems
JPH052045A (en) * 1991-06-25 1993-01-08 Onkyo Sokki Kk Vehicle-borne inspecting apparatus
WO2001027643A1 (en) * 1999-10-12 2001-04-19 Henry William Sybesma Automotive harness and audio system analyzer

Also Published As

Publication number Publication date
GB0517730D0 (en) 2005-10-12

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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)