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 ...

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.

During our time testing the climate control systems of the Renault Duster and Volkswagen Taigun this May, the ambient temperature on site was a sweltering 42.2 degrees celcius. So, how did these ...