Comment

Comment on Bought my first "bench" power supply 😁

Thank you so much for this post! I’ve been wanting a bench supply for years but never liked the fact they’re huge so I stuck with the same method as you.
Please give an update after a while, I’m really interested hows it goes!

source

Sort:hotnew top

Eufalconimorph@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago
The small supplies are nice for size, but tend to have more noise than the big linear supplies. If you’re working with low-precision DC circuits, or even stuff up to audio frequencies (basically still DC) it’s not likely to be an issue. If you’re working with RF circuits it’s more likely to be an issue, though of course if they’re not too close to the switching frequency it’s easy enough to filter the output.

source
- asbestos@lemmy.world ⁨1⁩ ⁨year⁩ ago
  Thanks for the info! Do you have any suggestions for low-noise supply that isn’t huge and doesn’t break the bank?
  
  source
  - Eufalconimorph@discuss.tchncs.de ⁨1⁩ ⁨year⁩ ago
    The “isn’t huge” is the issue. Linear supplies need a rather big transformer to work with 60Hz mains instead of chopping it up at 20kHz or more like switchers do. I’ve got a Siglent SPD 3033X-E (decent, reasonably cheap) and a BK Precision 9201 (better, more expensive).
    
    source