Spark plugs have a pretty predictable life cycle, but ignition coils can be harder to track. Here's how to tell if an ignition coil is on its way out.

The tiny Tesla coil isn’t big and bold enough to throw big sparks, but it will light a fluorescent tube at close proximity. If you like your Tesla coils musical, we have those too.

To investigate the electrical realm of high-frequency and high-voltage, Tesla invented an apparatus that pushed the limits of electrical understanding. None of the circuit's typic ...

Choosing the correct ignition coil.The Flame Thrower 40,000V coils have internal resistance rated at 1.5 or 3.0 ohms. The 3.0-ohm coil should be used on PerTronix Ignitors installed on four- and ...