Dual voltage

rubin
rubin Posts: 565
edited August 2010 in Electronics
I have a stereo power amp (class a/b) which is described as having a transformer with a dual voltage power supply,namely 70/40 volts.What exactly does that mean?What is the purpose of a dual voltage design.
Post edited by rubin on
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  • [Deleted User]
    [Deleted User] Posts: 7,598
    edited August 2010
    Hey Rubin,
    I would image it is referring to the secondary side of the AC transformer. The incoming voltage is 120 Volts, the transformer converts this to two voltages, 70 and 40 Volts. Then these AC voltages will be converted to DC, filtered and possibly regulated. Some parts of the amp will use the higher voltage and others the lower one.
    I hope this is helpful information.
    Cheers, Ken
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  • rubin
    rubin Posts: 565
    edited August 2010
    Kenneth Swauger wrote: »
    Hey Rubin,
    I would image it is referring to the secondary side of the AC transformer. The incoming voltage is 120 Volts, the transformer converts this to two voltages, 70 and 40 Volts. Then these AC voltages will be converted to DC, filtered and possibly regulated. Some parts of the amp will use the higher voltage and others the lower one.
    I hope this is helpful information.
    Cheers, Ken

    Thanks Ken.
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