The next step was to detect when the screwdriver was at a node on the Lecher line. For that I used a high frequency diode, an NTE583 silicon diode whose packaging says “Schottky Switching for ...

For all of you who have a multimeter thrown in a drawer or toolbox but don’t know how to use it, these instructions will help in your search for missing voltage.

A multimeter and its test leads allow electrical workers to reach into an energized panel, touch live circuit components with the end of the test leads, and capture electrical readings like voltage, ...

When your car doesn’t start, often the battery is the culprit. Unfortunately, most vehicle owners do not check their battery until it fails. As preventative maintenance, the suggested best practice is ...

Today I got a multimeter (nothing fancy, precision is +/-0.5% for DC current to tweak my lines (Antec Truecontrol).Findings:- motherboard measurments are generally unreliable, for instance when I ...

While there are other safe methods for measuring line voltage or protecting your oscilloscope, [Jason]’s isolated amplifier method uses high voltage capacitors to achieve isolation.

As has already been said, make sure you multimeter is set to AC voltage, then measure the voltage between all combinations of wires that you can, just in case the thing is wired wrong.

How to enable a microcontroller to measure floating dc voltages to 2% accuracy. Measuring a floating dc voltage using a microcontroller’s analog-to-digital converter (ADC), with the dc+ to dc ...