Comment on Bought my first "bench" power supply đ
Eufalconimorph@discuss.tchncs.de â¨1⊠â¨year⊠agoThe small supplies are nice for size, but tend to have more noise than the big linear supplies. If youâre working with low-precision DC circuits, or even stuff up to audio frequencies (basically still DC) itâs not likely to be an issue. If youâre working with RF circuits itâs more likely to be an issue, though of course if theyâre not too close to the switching frequency itâs easy enough to filter the output.
asbestos@lemmy.world â¨1⊠â¨year⊠ago
Thanks for the info! Do you have any suggestions for low-noise supply that isnât huge and doesnât break the bank?
Eufalconimorph@discuss.tchncs.de â¨1⊠â¨year⊠ago
The âisnât hugeâ 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. Iâve got a Siglent SPD 3033X-E (decent, reasonably cheap) and a BK Precision 9201 (better, more expensive).