While using a digital multimeter to diagnose electrical problems on customers’ equipment, I frequently hear the comment, “I’ve got one of those multimeter things, but I never learned how to use it.” ...

Digital multimeters have replaced traditional analog meters long back. It offers better accuracy, reliability, and better handling of impedance. It is a versatile device in the truest sense. You can ...

If you’d like to fix or even diagnose anything involving electricity – whether it’s the energy that surges through a car, ...

In Episode 21 of “EC&M Asks,” our subject matter expert Tommy Northcott, P.E., a senior power engineer and branch manager for Jacobs Technology, Inc., answers some of his most-asked questions about ...

A digital multimeter is one of the most important tools for both professional mechanics and DIYers, not to mention people ...

Always ensure adequate workspace, lighting, and proper tools before accessing electrical panels to minimize hazards. Inspect ...

A precision voltage reference is useful in the lab for checking your multimeters. This post describes the construction of a poor man’s precision voltage reference. It is great for checking any ...

This circuit is designed to check the condition of lead-acid and gel cell batteries with capacities greater than 20Ah. It switches a load of about 18A at a rate close to 50Hz so that the internal ...