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New miniature programmable DC power supply - FNIRSI DPS-150

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ptluis:

--- Quote from: Fungus on September 25, 2024, 02:48:08 pm ---
--- Quote from: ptluis on September 25, 2024, 02:40:58 pm ---Try to power the device from battery source and then take measures 200+mV are excessively high.

--- End quote ---



--- End quote ---

I'm referring to ripple not noise. I didn't have any noise contamination when I did the test, I also source the device from battery pack

Aldo22:

--- Quote from: ptluis on September 25, 2024, 02:40:58 pm ---Try to power the device from battery source and then take measures 200+mV are excessively high. I had one and the ripple values were around 28mv from battery source.

And if you supply it with 30V you won't get 30V at output mine did 28.6V

--- End quote ---

Thank you.
I don't have one (yet), I was just wondering if I should buy one for applications where “low noise” is an issue. I already have a "high noise" PSU.  ;)
Not completely convinced yet as it obviously depends on the quality of the input.
Step-up converter would have been nice too.

Evi:
New-New
https://banggood.com/DPS100-DC-Power-Supply-2_4-inch-HD-Screen-100W-Output-Type-C-DC-Input-Adjustable-Voltage-and-Current-10-Preset-Outputs-p-2021225.html?

ptluis:

--- Quote from: Aldo22 on September 25, 2024, 02:52:57 pm ---
--- Quote from: ptluis on September 25, 2024, 02:40:58 pm ---Try to power the device from battery source and then take measures 200+mV are excessively high. I had one and the ripple values were around 28mv from battery source.

And if you supply it with 30V you won't get 30V at output mine did 28.6V

--- End quote ---

Thank you.
I don't have one (yet), I was just wondering if I should buy one for applications where “low noise” is an issue. I already have a "high noise" PSU.  ;)
Not completely convinced yet as it obviously depends on the quality of the input.
Step-up converter would have been nice too.

--- End quote ---

For low noise I always use battery as source and in cases were sensors with output up to 100mV always use battery as source without using smps or dc-dc converters only analog.

For lower voltage DUT you should always choose a ps that allow you to source it from battery pack , that's why I'm converting all my equipment to portable including Scopes, sig gen, etc, etc

You save alot of headache's

ArdWar:
What topology is it anyway? I'd expect it to have linear post regulation (if only because you don't normally do constant current using switcher directly). But those reported ripple/noise performance are unconvincing...

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