New miniature programmable DC power supply - FNIRSI DPS-150

[LeonR]

https://www.aliexpress.com/item/1005007614877705.html

Features:
1. Model：DPS-150
2. Input Voltage：DC5.0V~32V
3. Input Current：100mA~5A
4. Input Way 1：PD fast charger
5. Input Way 2：QC fast charger
6. Input Way 3：Power bank
7. Input Way 4：DC power adapters
8. Output Voltage：0~30V
9. Output Current：0~5A
10. Output Power：0~150W
11. Operating Environment：0℃~40℃
12. Load Regulation：0.49%
13. Full Load Efficiency：96.30%
14. Screen：2.8 Inch (320*240)
15. Weight：about 178g
16. Dimensions：106×76×28mm
17. Overvoltage Protection：support
18. Overcurrent Protection：support
19. Undervoltage Protection：support
20. Overpower Protection：support
21. Overtemperature Protection：support
22. Reverse Input Protection：support
23. Reverse Output Protection：support
24. Short Circuit Protection：support
25. Firmware upgrade: support

Seems like the Alientek DP100 have a potential competitor now.

[sonpul]

A review with photos has been released. Many will need a translator.
FNIRSI DPS-150 adjustable DC-DC converter with rotary screen

[Fungus]

Nice!

[4thDoctorWhoFan]

I'm taking a chance and ordered one of these.  FNIRSI usually has good hardware but the software is horrendous.
I seem to have a habit of purchasing these mini products.  I don't know why.   

[Doctorandus_P]

I have a strong dislike for fnirsi stuff. The boxes they make look nice and appealing, and so are their prices, but the rest is such a pile of garbare that you're better off buying some decent stuff.

A lot of reviewers tend to disregard the faults in the fnirsi stuff (they get more stuff for free if they make positive reviews). The problem with this fnirsi stuff is that it is marketed towards beginners, and those are also the most likely to get confused by the flaws in this fnisi stuff. I thin their scope is not even capable of single shot mode. It always does some weird averaging, which is clearly visible when you for example change the timebase or voltage setting. Try to catch a glitch with that. And yet, reviewers still give it a positive review because it is capable of showing a sinewave at half the claimed bandwith of the instrument.

And what does text on the back mean:
"PD and DC transposons Cannot Be Inserted Simultaneously"

I guess it means that all the smoke is released if you put two plugs in this gadget.

A part of the appeal of a power supply like this is it's compact size and portability, and it can be powered from a power bank, but I guess the big LCD would suck the batteries dry quite quickly.

This thing is clearly an "improved" copy of the Alientek DP100 (Dave made a review about that). That is a quite nice powersupply and also relatively low noise for an SMPS. (I think even Marco Reps likes that one).

While having a short peek at youtube, I got a video from Matthias Wandel, and he also gives the fnirsi scope a thumbsdown. He says this advertised as 100MHz scope is "sort of usable" up to around 20MHz or so, and that is apart from it's other flaws such as horrible aliasing.

Maybe fnirsy will stop lying about it's specifications, and either tune down the specifications, or make the hardware and software better, but if they ever do that, I guess that will be 5 to 10 years into the future.
For the short term it's much better to save up some money and buy something that at least matches it's advertised specifications.

[ha_embedded]

Unclear specs, Datasheet says max. 32V, marking on product says max. 20v. And the PD-input, curious to know if they support PD3.1 for 28V. Probably not, would be very nice for 24V products.

[4thDoctorWhoFan]

I received one a few days ago and my initial impression is positive.

It appears well made and works like a power supply should.
My only minor gripe is of course the spacing of the banana jacks.  It's not the typical spacing for the dual banana plugs.

The screen is nice and tilt function comes in handy for different viewing angles.

So far, I have only tried the USB C PD connection which seems to max out at 20V input.  The DC barrel jack can apparently go to 30V but I have yet to try it.

[Evi]

Uout >=5V
Shame!!!

[4thDoctorWhoFan]

Uout >=5V
Shame!!!

I don't know what Uout is.  Do you mean Vout?
If so, the device goes from 0V to 30V.

[Evi]

Try to obtain 0<Vout <5V.

[4thDoctorWhoFan]

Try to obtain 0<Vout <5V.

Must be a language barrier as I don't know what you are trying to say.

[Evi]

Obviously...


Understand?

[Aldo22]

Does it produce (a lot of) noise/ripple itself or does that just depend on the quality of the input?

[4thDoctorWhoFan]

Obviously...


Understand?

No, not obviously.  Perhaps you have no idea what you are talking about. Just saying.

Instead of being an arse, how about trying to explain yourself better?

[4thDoctorWhoFan]

Does it produce (a lot of) noise/ripple itself or does that just depend on the quality of the input?

I have not done any noise/ripple tests yet. I just received it. I have not even tried the barrel jack yet.
Hopefully in a few days I will have time to test for noise/ripple.

[4thDoctorWhoFan]

Does it produce (a lot of) noise/ripple itself or does that just depend on the quality of the input?

Okay, I did a very quick check for ripple using the usb C input.  I'm using a relatively cheap Amazon Basics 100W USB wall charger.
Under load, the ripple is negligible.  I used a 1A load and varied the voltage from 1V to 20V.
I also compared it with the ripple from the output of my Rigol DP832 power supply and I couldn't see any difference.

But as you stated, it might depend on the quality of the source.
 

[Fungus]

But as you stated, it might depend on the quality of the source.

Nah, the voltage will go through all sorts of inductors/capacitors on the way to the ouput. Your source would have to seriously messed up to make a noticeable difference.

[4thDoctorWhoFan]

But as you stated, it might depend on the quality of the source.

Nah, the voltage will go through all sorts of inductors/capacitors on the way to the ouput. Your source would have to seriously messed up to make a noticeable difference.

Well, there you go.
If source does not matter, then ripple is not a concern.

[Fungus]

I'm seriously thinking of getting one... 

[4thDoctorWhoFan]

I'm seriously thinking of getting one... 

You should get one.  They are cheap enough.

Personally, I like the flip screen.  I also have the miniware power supply and while it's well built, the LCD screen is very small.

[Fungus]

What's the max input? In the picture it shows "20V" but the specs say "32V".

I've got a few 24V supplies here that could run it but nothing much between 12 and 24.

[4thDoctorWhoFan]

What's the max input? In the picture it shows "20V" but the specs say "32V".

I've got a few 24V supplies here that could run it but nothing much between 12 and 24.

The manual says 5-32V.  Printed on the back of the device itself above the barrel jack it says 5-32V.
I have yet to use the barrel jack as so far I have only powered it via USB-C.

[Fungus]

The manual says 5-32V.  Printed on the back of the device itself above the barrel jack it says 5-32V.

OK, thanks.

I have a feeling these are 3D renders, not reality:

[4thDoctorWhoFan]

The manual says 5-32V.  Printed on the back of the device itself above the barrel jack it says 5-32V.

OK, thanks.

I have a feeling these are 3D renders, not reality:

Yes, you are probably correct. 
Just like the 3D render of their new transistor tester that had the wrong NPN/PNP displayed. LOL

[Fungus]

I have yet to use the barrel jack as so far I have only powered it via USB-C.

Did you get the one with the official USB adapter?