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> wrote: > Although this link > > http://www.righto.com/2012/10/a-dozen-usb-chargers-in-lab-apple-is.html > > 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' > > -pete > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com <javascript:;> > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.