True it will vary some with temperature although not enough to matter for our uses IMHO.
At 10A when testing it on the power supply it only changed the reading by a small amount even when hooked up for several minutes. I think it ended up with about a ~5% change in the reading.
Seeing as where you place the wire in a clamp meter can have that much effect or more I am not worried about it.
Although it is good to keep in mind that it is not a 1% tolerance shunt by any means, just good enough for what we do and cheap and easy.
Since you are in here anyways, since seeing your test of the DPS5015 I got mine running (was using the 3012 before) and I noticed similar results to your ripple voltage.
Turns out that the larger units have a higher ripple (makes sense, just not real clear in the specs). Testing my older/smaller DP50V5A the voltage ripple is only ~13mv.
I wish I knew where the midrange models fell between those. The 3012 for example was more stable but I forgot exactly how much more so.
Trying to modify this module is not worth it IMO. Either get one of the smaller units or if you need accuracy, power and stability it is time to get a better unit.
I have a dp50V5A and the DPS5015. The combo works well together. I do not need lower ripple when over 5A for anything I do and when I am under 5A I have the smaller unit with only ~13mv of ripple.
Received the case this weekend for my 5015, it’s a nice little unit, quite a snug fit but it keeps the whole thing compact.
Also grabbed a 5005 and a couple more of the USB meters he sells on the Ali store, great little units those :+1:
TBH I can’t say, I assume it should be on constant but mine didn’t work when I first assembled it. I won’t get a chance to look again for at least a week as I’m away working.
A small board attaches directly to the input posts to give power for the fan but I guess I connected it wrong. Looks like a small connector should be provided but it is missing and needs to be soldered. Video showing case
I use the Dell EPS-470 as a DC power source for my DPS 5015, and the fans on it are much louder than the fan on the DPS5015, FWIW. The volume of the EPS-470 fans is probably the only part of this budget setup I don’t like, in fact. But if that’s my only complaint, that’s not exactly a dealbreaker.
Hi old friend
How are you ? it is me again
Because there are 2 good news. So I will both you again to tell you
1, New product DPH5005 buck- boost power supply will be published at 11,11 US time.
There are 3 version, no communication version, USB communication version, USB+ Bluetooth communication version, the price is at least 33.98 usd only 3 days,. After 3 days, the normal price is about at least 38 usd . please seize the opportunity
2, 11.11 biggest sale promotion will beginning at 11.11 US time. There are many big coupons on aliexpress. This is our home page :
In our shop, there are many big discount and coupons
DP and DPS, DPH power supply: 23–27 off (24–27 off at phone):
Both my DP and DPS power supplies are still working great, they have gotten very regular use for over a year now.
I have also been using the USB 3.0 tester and USB load source quite a bit recently as I hunt down the best USB power bank. Do you have one that can measure more then 3A of current?
Does the communication version of the power supplies allow logging on the computer yet?
thank you very much for your support and your message
for now there is no better one , max current is only 3A, the communication version still did not have this function
I have pictures of the setup
Anyway as seen in the pictures the screen of the DPS shows the output voltage only the output current(yellow) and output power (purple)are both at 0.00.
Also when trying to use other preconfigured options like M1…9 it’s reverting back to M0.
Up on top next to Set it shows what I programmed in volts and amps not at the output area.
Does anyone know why this happens? Thanks in advance and let me know how to input pictures.
I have pictures of the setup
Anyway as seen in the pictures the screen of the DPS shows the output voltage only the output current(yellow) and output power (purple)are both at 0.00.
Also when trying to use other preconfigured options like M1…9 it’s reverting back to M0.
Up on top next to Set it shows what I programmed in volts and amps not at the output area.
could you make a video to show the problem, your picture is too blur, I can’t see it clearly
and please contact me by email 1749808860@qq.com, ok?
Nice power supplies, the screen makes it a bargain. But why so low frequency?
I wanted to drive power leds in cc mode. Given the fact that unit has very nice color screen!
Specialized LED drivers like the LED2001PHR work at 850khz fixed frequency so you don’t ever get flicker even on camera.
Is RDtech willing to release series for LED driving? Like RGB, RGBW versions would be awesome.
Even upgrading switching frequency on current units would be good enough for me.
you can connect the LED directly … only the current is closed to resolution , it will blinking
for example , DPS5015, the resultion is 0.01A, if the current is 0-0.05 , it will be blinking … when the current is more than 0.1a , it will not be blinking …
for DPS5005, The resolution is 0.001A, at 0-0.005, it will be blinking, more than 0.01A, it will not be blinking
so the resolution will affect this …