before electrical power leaves a power station – it is transferred at high voltages by using 'step-up' transformers to increase the voltage to around 275,000 V before electrical power enters ...

If you’ve ever wondered why something like a radio or a TV could command a hefty fraction of a family’s yearly income back in the day, a likely culprit is the collection of power transformers ...

power is measured in watts (W) potential difference is measured in volts (V) current is measured in amperes, also referred to as amps (A) A step-down transformer converts 11,500 V into 230 V.