An AC/DC receiver design is a style of power supply of vacuum tube radio or television receivers that eliminated the bulky and expensive AC-only mains transformer. Having no mains transformer, receivers could operate from a DC supply as well as an AC supply (i.e., "AC/DC"), a feature which became less important as DC domestic electricity fell out of use.
An AC/DC receiver design is a style of power supply of vacuum tube radio or television receivers that eliminated the bulky and expensive AC-only mains transformer. Having no mains transformer, receivers could operate from a DC supply as well as an AC supply (i.e., "AC/DC"), a feature which became less important as DC domestic electricity fell out of use.
Source: Wikipedia "AC/DC receiver design" · CC BY-SA 4.0
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