In turn, there are two measurement ranges: AC current range and DC current range. As a rule, the maximum amounts for these ranges are the greatest levels of current that devices can measure.

Testing products designed to operate from ac power is not as simple as one might think. Consider a factory with the straight-forward need to manufacture and test the heating element for a toaster.

Relays are electromechanical devices that use a magnetic solenoid to actual a switch. When current is passed through the solenoid coil, it produces a magnetic field. The magnetic field is strengthened ...