The Harbor Freight MADDOX back-probe kit lets DIYers test automotive sensors safely. Just insert between wire and insulation, ...

After hearing all the "check it with a multimeter advice" going around, I figured it would probably be worth it to get one. I don't have any problems ATM, but its better to be prepared when something ...

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 ...