The oscilloscope gives the following display for the electricity from the mains. Figure caption, Oscilloscope trace of the voltage from an alternating supply. The signal is constantly changing ...

When designing a mains power supply for a small load DC circuit, there are plenty of considerations. Small size, efficiency, and cost of materials all spring to mind. Potential lethality seems ...

The mains supply in the UK is an alternating current (ac) voltage at a frequency of 50 hertz (Hz) and a voltage of 230 volts (V). The power input for households is ac as the National Grid can only ...