Re: [volt-nuts] Practical power supply noise testing

If you are looking for sub 10 Hz noise you could just null bridge two of them with an ordinary multimeter. On Fri, Jul 1, 2016 at 8:47 AM, John Ackermann N8UR wrote: > I have several supposedly low noise bench power supplies that I want to > check out. They seem to work well but

Re: [volt-nuts] Practical power supply noise testing

Clarke <bro...@pacific.net> Sent: Saturday, 2 July 2016 11:28 AM Subject: Re: [volt-nuts] Practical power supply noise testing In message <5776e31d.7090...@pacific.net>, Brooke Clarke writes: >Instead of headphones something like the HP 4395A [...] Well, there is a slight diffe

Re: [volt-nuts] Practical power supply noise testing

In message <5776e31d.7090...@pacific.net>, Brooke Clarke writes: >Instead of headphones something like the HP 4395A [...] Well, there is a slight difference in price there, isn't there ? :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP

Re: [volt-nuts] Practical power supply noise testing

In message <2656f010-8e12-4bad-b9ae-713cefee1...@febo.com>, John Ackermann N8UR writes: >I have several supposedly low noise bench power supplies that I want to check >out. They seem to work well but are quite old, so of course one wonders about >the caps, etc. > >Can someone suggest

Re: [volt-nuts] Practical power supply noise testing

In the past when I did this, I used a high resolution digital voltmeter like a Fluke 8505A in sample mode with a simple 10 Hz low pass filter. I took samples for 10 seconds to get down to 0.1 Hz and calculated the standard deviation to get RMS noise. I made a recent post about this in connection

Re: [volt-nuts] Practical power supply noise testing

t-nuts] Practical power supply noise testing I have several supposedly low noise bench power supplies that I want to check out.  They seem to work well but are quite old, so of course one wonders about the caps, etc. Can someone suggest a practical test regime to verify power supply DC noise perfo

[volt-nuts] Practical power supply noise testing

I have several supposedly low noise bench power supplies that I want to check out. They seem to work well but are quite old, so of course one wonders about the caps, etc. Can someone suggest a practical test regime to verify power supply DC noise performance? Preferably one that doesn't