Bought my first "bench" power supply π
Bought my first "bench" power supply π
I've been in need of a bench supply for a while, up to this point I've been using little buck/boost boards with a multimeter to get the voltage I want when working on a project. The limitations of that started to show though, so I was after a more ideal solution.
After spending a while looking at various power supplies, I happened to come across this tiny adjustable supply. After binging a bunch of videos on it, I decided it'll do, especially compared to the absolutely chonky big alternatives.
Right out the gate, the aluminium casing feels amazing, but they could do with a bit of a stronger adhesive holding the glass screen cover in-place π€¦ββοΈ I'm personally not too bothered by this, but it doesn't set a good first impression IMO
A few seconds after pressing the glass back into place, the opposite end of the glass popped loose. At least I now know there are screws hidden under here if I ever decide to open this in future π
Aside from that, it has pretty reasonable specs for the size:
- Dual input, either AC (mickey ears plug) or DC 7-28v (XT60)
- 30V 10A (max output 200W on DC, max 100W on AC)
- Minimum output 1v 500mA
- 65W USB PD output (handy for the Pinecil I recently ordered to replace my old iron π)
- 200x200 IPS display
- AC input uses GaN parts
When watching the videos a few people complained about the absence of an XT60 to banana jack. This may have changed at some point, as one came with mine
The internal AC converter appears to supply 19V into the unit, which you can use via the XT60 connector at the rear. Not sure if intentional or not, but pretty neat nonetheless - as long as you dont accidentally leave a lipo plugged in there π³
I'm not sure if its worth the price tag ($60-120 depending on where you look) when you can get a RuiDeng clone for under $30. I mainly jumped for this because of the size, integrated AC input, and that 65W USB-C. Voltage ripple is a little concern at lower voltages where some components may not be so forgiving...
Happy with the purchase so far though, can't wait to start using this for projects!
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Thank you so much for this post! Iβve been wanting a bench supply for years but never liked the fact theyβre huge so I stuck with the same method as you.
Please give an update after a while, Iβm really interested hows it goes!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.
Thanks for the info! Do you have any suggestions for low-noise supply that isnβt huge and doesnβt break the bank?
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).