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Computer Audio Asylum Music servers and other computer based digital audio technologies. |
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Computer Audio Asylum Music servers and other computer based digital audio technologies. |
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In Reply to: RE: " it would be useful if we could see a spectrum analysis of the power supply's noise " posted by beppe61 on July 14, 2016 at 03:05:53:
Generally, lab PSs have different requirements from audio PSs.
Study the posted supply circuit diagram. You'll see protection resistors inline with the output that increases output impedance in favour of current limit. You'll see fans because these guys are trying to save on heatsinks.
For audio purposes, the lower the output impedance and the faster the output tracks the demand the better. Thus excellent transient response is important.
They used to say that preamps and amps are really their power supplies and this appears to have been forgotten in digital audio.
A $50 PS that says it has fighter jet technology is not credible. What it has is feedforward elimination of certain peaks, or a narrow range of peaks. The technology is well known in noise elimination headphones and has been around since the 70s.
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Follow Ups
- About Audio Power Suplies - fmak 01:34:49 07/16/16 (1)
- RE: About Audio Power Suplies - beppe61 08:49:07 07/16/16 (0)
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