How to measure power supply ripple down to 1uv

[@jannikneumann2609]

Hi Gabi, thank you for all the videos. They helped me to choose the right Ian Canada parts. I have a request: can you explain how to measure the 120/230 AC quality from the wall, passive and active conditioners?

[@Gabster1]

You would need at least a oscilloscope to analyze the signal it is more important to focus on the dc conversion and keeping that at low noise rather the purifying the ac signal

[@chriswhite9912]

Excellent. I use batteries for my preamp (Dodd Audio) and I am really interested in creating clean power for my audio projects. Also, have you looked at projects to clean up AC power (I’m helping a friend with a recording studio). Thanks. I was frustrated with my attempt to measure with an o-scope

[@WS-gs6sf]

You know quite well how power effects audio. Have you had a chance to look at Belleson regulators? I have a couple of amps using the technology and I'm sold. Cheers.

[@apang9999]

Hi Gabster, thanks for the great video, I'm preparing to build one adapter very soon. I have some questions here on the capacitor and hopefully you can help to answer. What type of capacitor to be used? Can I use some other value other than .5uF? Is there a specific reason to choose this value and also the voltage rating? Thank you very much.

[@Gabster1]

The Idea is to get the 60 or 50 hz ripple to go and the Diodes limit the Voltage cap voltage rating should be at least 400v in case you are using it to Test B+ on Tube amps I would go with 600v even

[@mauromazzoncini5711]

Hi sorry I didn't get round to thanking you last week for replying back to me

[@thinkIndependent2024]

Im not sure the scan rate is catching the true peaks in your setup or the xlr is lowering the actual true noise ( XLR differential op-amps do that)

[@Nightjar726]

Could you also do basic measurements of DACs with that equipment and REW? That would be amazing if you could show us how to do that. I’d pay you to show me how to do that

[@nudebaboon4874]

Excellent work sir, and well explained.

[@mariozablocki519]

Hi, I think you have a bug in the scheme :) The central pin from the BNC connector is connected to the fuse, then to the capacitor and then to port 3 on the XLR connector, isn't port 3 on the XLR connector - (negative) pole? And then we have port 2 (which is positive) on the XLR connector which is connected to ground. I think it shouldn't be like that? And if it has to be like that, can you explain to me why? Are you talking about the balanced or SE sound card input? Thanks

[@Gabster1]

You are definitely correct center BNC should ideally go to 2 but it still works fine as it is a true balanced input on the sound card and It is a AC signal and a mono input so not too worried about phase issues

[@alesizzz1]

Excellent presentation

[@Gabster1]

Thanks a lot

[@pauljefferies7122]

Just made one of these for myself : drive.google.com/file/d/1S4Mxz2woS8jDs4bF7bcGMZmmXmRua5Sb/view?usp=drivesdk Thanks Gabster! Your videos are so helpful. What a ⭐