Hybrid relays combine a mechanical switch with a solid-state switch, and they are set up in parallel to control a single load ...

We show you how to wire in an electric fan relay kit with a thermostatic switch. If you've got an electric cooling fan on your classic car or hot rod and you want to know how to wire it with a relay, ...

As you can see in the schematic the 12V battery (or use other voltages) is connected with the plus at terminal T1 and minus at terminal T2. The contact 1 and 4 are connected together as 2 and 3 are ...

I have no idea what optional switch Toyota might have put in this under-dash opening, but it's a perfect location for my audio devices Since I was not willing to drill or cut any holes anywhere in my ...

Here is a great collection of touch switch circuits. A touch switch is an electronic device that enables us to control a circuit by simply touching a sensor. Simple touch switch circuit with 4011 – ...

Relays are electromechanical devices that use a magnetic solenoid to actual a switch. When current is passed through the solenoid coil, it produces a magnetic field. The magnetic field is strengthened ...

The intercom goes ultra-high-tech with this snazzy switch system from Wink. A smart thermostat? Smart light switches? Amateur hour. If you really want to up your smart-home game, it’s time to get ...

Ladder logic uses switch or relay contacts to implement Boolean expressions. In years past, ladder logic was made possible with discrete relays and was sometimes termed “relay logic.” Today most ...

I have a pickup I absolutely love, and would like to prevent it from being stolen. Have any ideas to make it theft-proof? Car theft is a perennial problem that everybody worries about. In 1991, the ...

Q. I have a 2009 Chevy Cobalt. The car was running but had some fault codes, one being a faulty ignition switch. I replaced the switch and did a key relearn, and now the car will not crank or start.