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What are your expectations from an adjustable power supply?
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AndyC_772:

--- Quote from: nctnico on April 09, 2023, 11:30:24 pm ---- Not having power on / power off overshoots is extremely important where it comes to adjustable power supplies. You should be able to pull the plug without getting an overshoot on the output. Same for plugging in: when the output is supposed to be disabled, it should not show anything

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I'll second this; if it's a lab supply, then by definition it's suitable to be connected directly to low voltage semiconductors, which may have little or no protection against overvoltage. I did once destroy a couple of low voltage, low power DSPs because a PSU had poorly controlled behaviour on light loads.

The start-up behaviour in particular must be monotonic with zero overshoot. It should also be able to deliver a controlled amount of energy to supply the load's start-up surge before its current limiter kicks in.

I use an HP 6632B as my bench supply for this very reason; its performance is exemplary, so I have no worries at all about connecting it to whatever I happen to be working on at the time.
thm_w:

--- Quote from: Brumby on April 10, 2023, 12:28:14 am ---You might get some ideas from Dave's own efforts along these lines: https://www.eevblog.com/projects/usupply/

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Yeah UI wise this is a better place to look.
The miniware UI is not great. Its cool and compact, but I don't know how many people want that.



--- Quote from: TopQuark on April 10, 2023, 04:38:42 pm ---One thing I would be quite concerned about is leakage current, especially in what is supposed to be a lab supply.

Usually consumer grade Type-C chargers are optimised for efficiency and size, but rarely for leakage current. I have a very nice GaN USB-PD charger (good efficiency, 100W output, small-ish size) that works very well for charging my laptop, but I would not use it to power any sensitive circuits with its ~150uA of leakage current.

If your power supply design is non-isolated and you use a consumer grade 2-prong charger, there's not much you can do in regards to leakage current. If you design your power supply to be isolated and take great care handling the leakage current (e.g. reducing transformer inter-winding capacitance, reducing voltage slew rates etc.), you can get something that works well for sensitive electronics.
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Miniware doesn't come with an external PSU. Up to you to plug in a barrel jack or USB PD supply.
So going to be similar here, either purchase a low leakage supply or earth the output or whatever.
armandine2:
I got myself various single model power supplies rather than dual power supplies, I don't therefore have tracking  :palm:
heygeorge:
Input voltage: 220V/110V 50Hz
Output current : 0-8A
Collecting precision: 0.1mA
Fast charge protocols: PD, QC fast charge
For example ~ AiXun P3208 https://www.aixuntech.com/product/p3208-320w-smart-regulated-power-supply-32v8a-one-key-boot-power-box-/
ejeffrey:

--- Quote from: armandine2 on April 14, 2023, 12:51:25 pm ---I got myself various single model power supplies rather than dual power supplies, I don't therefore have tracking  :palm:

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I've never found tracking that important of a feature.  It's slightly convenient if you are doing opamp split supplies or trying to parallel for large loads but nothing that I miss when it's gone.
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