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.” ...

Used to deliver power to your home, office, and any other building you can think of, alternating current (AC) voltage is relied on to provide power flawlessly on a daily basis. But why isn’t direct ...

Alternating current (ac) or direct current (dc) circuits are capable of carrying very different currents, as illustrated by the ratings on the switch in Figure 1. This is why it’s so important for ...