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- Jan 15, 2022
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Ok. I’m considering DIYing an amp (based on the TDA7294). I’m looking for a power supply I can run external initially while I test it out (Figuring I would build one channel and once I have confirmed the heat and power characteristics build the second and get a finished case). Basically I just want to buy a power supply rather than build one. But I’m confused by the available supplies on Mouser and Digikey. I was looking at the Meanwells in the 300 watt, 24 to 36v range. But I can’t figure out what the -V pins are referenced to. Are these +-24V (or +-36) power supplies? I guess I’m wondering if there are any good articles on understanding power supplies in terms of the info listed in the specs. I mean I’ve read up on the SMPS and linear supplies and I get them enough to model simple linear supplies, but apparently not enough to know what I am buying wil work (except the Connex and Hypex ones). I’m clearly missing something. Anyway here is a link to the SMPS I was trying to figure out.