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Test equipment is a disease...
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BillyO:
I have at my disposal no less than 4 wonderful pro-level bench power supplies.  A pretty good low end unit and a fairly nice DIY one I just finished building.

Guess what I spent all day on today?  Yup, designing an even better DIY bench power supply!!!

Help me!
TomKatt:
Don't look at me for help - I got curious why I was having trouble plugging a differential probe into the usb port of my scope for power and now I'm building a current probe setup to investigate something that could be solved simply by plugging it into a wall wart...  Meanwhile my original task gets completely sidelined and my online shopping carts are filling up with new gear.

It never ends ;-)
Martin72:
Hi BillyO,

https://www.eevblog.com/forum/testgear/test-equipment-anonymous-(tea)-group-therapy-thread/


Edit: Bla.
jjoonathan:
Re: "how much power can I get out of a scope USB port to power my probe," I was measuring exactly this just the other day by using my N6705B as a fancy graphing electronic load.

https://www.dropbox.com/scl/fi/n668g389bo57tq4e5ogu8/Probe-Pwr.pdf?rlkey=9ysljk45tm4tg444gzu9sgv1o&st=r7l5gds9&dl=0

so clearly you should just buy more equipment. What's that? You aren't made of money? Well there's a "cheap" and "broken" (i.e. "adventure model") one on eBay right now! Hurry hurry hurry! Just think of all the money you could saaaaaaavvvveee  >:D >:D >:D >:D

EDIT: ebay link removed due to compliance with Test Equipment Voluntary Self-Exclusion Program
TomKatt:

--- Quote from: jjoonathan on July 16, 2024, 11:22:32 pm ---Re: "how much power can I get out of a scope USB port to power my probe," I was measuring exactly this just the other day by using my N6705B as a fancy graphing electronic load.

https://www.dropbox.com/scl/fi/n668g389bo57tq4e5ogu8/Probe-Pwr.pdf?rlkey=9ysljk45tm4tg444gzu9sgv1o&st=r7l5gds9&dl=0>:D >:D

--- End quote ---
Not to derail the topic, but thanks!  Very interesting - I cannot believe I'm going over an amp...  Clearly I've got more investigating to do lol.

And don't tempt me like that !!! 
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