Relay Repairs Newcastle.
Relays and Switches

Auto Electrics Newcastle
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Relays and Switches:- Switches

A switch controls the transfer of power from the source i.e. battery or motor to other devices. In order to work correctly, a mechanical switch must open and close the circuit as quickly as possible to prevent sparking and rapid corrosion of the contacts. If this occurs, then eventually the corrosion will not pass current and the switch will fail to work.

Relays and Switches:- Relays

A relay is a very simple electro-mechanical switch that relies on an electro-magnet to carry out the switching action automatically. It consists of 2 separate circuits:- the first controls the electro-magnet and the second is the actual 'Switch'.

As current passes through a coil of wire, a magnetic field is created. The magnetism pulls on a spring loaded bar called an armature which acts as a switch making or braking the electrical contact for the main circuit. Depending upon the design of the relay the main circuit can either be normally ON (the magnet Breaks the circuit) or normally OFF (the magnet Makes the circuit).

Relay problems can be difficult to detect unless complete failure has occurred. The insulation on the wire making up the coil sometimes cracks and the coil 'short circuits'. This does not result in complete failure. Instead the magnetic field that the coil creates is greatly reduced so that the circuit Make or Break is not as rapid or intermittent. Corrosion of the contacts is also a common problem. Mechanical failure of a relay is very unusual.

Newcastle Upon Tyne repair of all types of auto electrics and specialising in:-

 
  • Reversing Sensors
  • Vehicle Instrument Panels
  • CPU
  • Seat Adjustments
  • Mirror Adjustments
  • Auto Control Module
  • Parking Sensors
  • Power Train Control Module
  • Climate Control
  • Engine Management
  • Canbus Systems
 

Electrical repairs to most makes of cars:-

Alfa Romeo Switches, Relays
Aston Martin Switches and Relays
Audi Switches and Relays
Austin Switches and Relays
Bentley Switches and Relays
BMW Switches and Relays
Bugatti Switches and Relays
Buick Switches and Relays
Chevrolet Switches and Relays
Chrysler Switches and Relays
Citroën Switches and Relays
Daewoo Switches and Relays
DAF Switches and Relays
Daihatsu Switches and Relays
Daimler Switches and Relays
Ferrari Switches and Relays
Fiat Switches and Relays
Ford Switches and Relays
Hyundai Switches and Relays
Isuzu Switches and Relays
Jaguar Switches and Relays

Jeep Switches and Relays
Kia Switches and Relays
Lada Switches and Relays
Lamborghini Switches and Relays
Lancia Switches and Relays
Land Rover Switches and Relays
Lexus Switches and Relays
Lotus Switches and Relays
Mazda Switches and Relays
McLaren Switches and Relays
Mercedes Switches and Relays
MG Switches and Relays
Mini Switches and Relays
Mitsubishi Switches and Relays
Morgan Switches and Relays
Morris Switches and Relays
Nissan Switches and Relays
Opel Switches and Relays
Peugeot Switches and Relays
Porsche Switches and Relays
Proton Switches and Relays

Puma Switches and Relays
Reliant Switches and Relays
Renault Switches and Relays
Rover Switches and Relays
Saab Switches and Relays
Seat Switches and Relays
Skoda Switches and Relays
Smart Switches and Relays
SsangYong Switches and Relays
Subaru Switches and Relays
Suzuki Switches and Relays
Talbot Switches and Relays
Toyota Switches and Relays
Triumph Switches and Relays
TVR Switches and Relays
Vauxhall Switches and Relays
Volkswagen Switches and Relays
Volvo Switches and Relays
Yugo Switches and Relays

Kit Cars - Electrics Finishing

Designing and building unique wiring harnesses.
Specialist in manufacturing and fitting custom wiring harnesses for kit cars.

Car Repair Auto Electrics

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