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Is there a way to make ac powered computer speakers to dc ? Answered

I'd like to use a pair of ac powered computer speakers and use them as a portable dc powered "boombox" for mp3 playback. Any detailed ideas out there????



CameronSS is right, but to add a little more: You need to locate the DC output, it'll be located around a single-unit bridge rectifier or 4 diodes, a smoothing capacitor and maybe a voltage regulator. Connect your DC supply here, but it means looking at the circuit carefully. If you post a pic people can advise you better.



I forgot that I can't add image notes here. Behind the wires is a voltage regulator, to the right are 4 diodes making a bridge rectifier and next to them smoothing capacitors. If you connect to the capacitor which your amp will probably have one of you should be OK. L

If they plug into a "wall-wart" transformer, they run off DC anyway, and you just need to supply the right DC voltage. If it's just a cord, it probably has a DC power supply inside, anyway, and you just need to open it up, find the transformer inside, and check the board to which the transformer is attached to determine that supply voltage, then tap in from there.