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How to Dimension a Power Supply for an Audio Amplifier ? (discuss.tchncs.de)

submitted 8 months ago by [email protected] to c/[email protected]

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Hi,

I recently bought a few pre-made amplifier modules for an 8-channel amplifier project (for a sound installation).

The amp is based on the TDA7294 chip and is rated 85W nominal. Now I'm looking for a power supply, but I'm a bit lost (this isn't really my strongest field, to put it mildly).

Do I just need to add up the output power, 8*85W = 680W, or could I get away with using something smaller, like a 300W or 300VA?

Also, the seller said that you need to use CV power supplies, CC won't work and kill the circuit. Does that mean a switching supply can't be used?

It looks like the module has a rectifier and smoothing caps integrated, so I could potentially just use a transformer, right?

Best, N

Why don't more people use desktop Linux? I have a theory you might not like in c/[email protected]

[–] [email protected] 2 points 10 months ago

Hmm good point!

Why don't more people use desktop Linux? I have a theory you might not like in c/[email protected]

[–] [email protected] 1 points 10 months ago (2 children)

That's not mutually exclusive with the author's argument, though.

if a computer vendor offers multiple distributions to choose from, the problem of choice remains.

And if the vendor only offers one option, which one should it be? And how can a user verify that it's a "good" option?