They’re inexpensive and easy to use, and they help keep you safe when doing DIY electrical work. Solution: Test. Use. Verify. First, test the tester by holding it to a known live circuit, like a ...

A step-by-step guide for applying an old DI that used simple circuits for PWM programming of standard bucking-type regulator ...

Occasionally a design requires capacitors that are much closer to being identical in value to one another than the usual ...