Benchtop linear power supplies also share in some deceptive marketing
regarding noise. Some have horrible 1/f noise, others are on par to a
tl431, which isn't too bad. Some will have spurious tones 10's of dB above
the Gaussian noise spectrum. Unfortunately most linear power supplies only
spec a total rms noise over 20 Hz - 20 MHz. Whether that's a flat power
spectrum or a handful of tones, is a test it and see senario.
On Wednesday, 12 October 2016, Pete Lancashire <p...@petelancashire.com>
> Although this link
> is about the little Line to 5V USB adapters one sees everywhere now days,
> it does show how crappy the output looks when one gets a 'bargin'
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