What is dc power supply?

Some articles on dc, dc power, dc power supply, power:

Guitar Pedalboard - Pedal Power Supply
... Most effects pedals are powered by varying levels of DC voltage, depending on the manufacturer ... DC power can be generated by batteries, an AC/DC power supply, or a rechargeable battery ... Battery life varies depending on the pedal's power draw ...

Famous quotes containing the words supply and/or power:

    There never has been a time in our history when work was so abundant or when wages were as high, whether measured by the currency in which they are paid or by their power to supply the necessaries and comforts of life.
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