A starter relay is an essential part of a vehicle’s ignition system. It acts as a switch that sends power from the battery to the starter motor when you turn the ignition key. This small device ...

Begin by connecting pin 85 of the relay to a clean ground point on the vehicle chassis or the negative terminal of the battery. Then connect pin 86 to the ignition switch wire — this is the wire that ...

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

Relays continue to be useful and popular, but in low-power, battery operated applications they tend to be power wasters. The following relay economy circuits reduce coil power significantly by simply ...

[Glitch] got his hands on a slew of relays which are meant for use in industrial equipment. They are designed to operate at 24V. He wanted to use these with common microcontrollers and instead of ...

You are correct that a relay is basically just a switch, but it's a switch operated via remote control, so to speak. A regular switch controls electrical current by connecting or breaking the path of ...

How many remote controls do you have in your home? Don’t you wish all these things were better integrated somehow, or that you could add remote control functionality to a random device? It’s a common ...