(from the article `rectifier`) ...current is used to produce a pulsating direct current, the process is called half-wave rectification. When both polarities are used, producing a ... Found on http://www.britannica.com/eb/a-z/f/69
2-diode or 4-diode rectifier circuit that permits utilisation of the positive and negative half-cycles of an AC voltage Found on https://www.encyclo.co.uk/local/20757