China’s current account surplus has been the subject of fierce debate in recent years, with politicians in the United States and Western Europe often criticising China’s rigid exchange rate regime.

Power factor (pf) is the ratio between real power (P) flowing to the load, and the apparent power (S) in the circuit: pf = P/S. It is a sinusoidal waveform and therefore expressed as a dimensionless ...

Electricity is always used to facilitate a function, whether it's running a fan, illuminating a room, or heating a tank of water. However, it's the work done by the appliance — in these cases an ...

Almost all off line switching power supplies over several kilowatts of output power use a three phase bridge rectifier. Typically, it comprises a six diode bridge and a DC bus filter capacitor. A ...