KORAD KA3005P / KA3010P (USB programmable power supply)
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- čas přidán 5. 09. 2024
- Unboxing and review of the KORAD KA3010P USB programmable power supply.
In this video I am testing and reviewing the KA3010p bench USB power supply.
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Thank you for demonstration "buzzing sound" at 3:31! It's maked me afraid, when it did first time, and it did it in not first power up. And you show, that is normal. I think, it's buzzing in not every power up, couse it's vary with electrical angle in moment of enable.
Cables that keep their shape when you bend them just tells you it's a crappy cable where each strand has a steel core coated with copper. This is the lowest quality cable you can get. It tells you nothing about the thickness of the total "copper" core. You have 3 types of copper stands sold today. The softest cable you can get have pure copper strands, you can tie knots with it and it won't leave a kink in the cable. Then you have the Aluminium core coated with copper, this is most cable sold in the world today, it is kinda soft, but you can make kinks to it by tying a knot with it. The last type is steel core and if you bend it it will have a kink in the cable. You can have a pure copper cable at that thickness that is stiff, but it will only be a cable with very few strands of copper making up the core of the cable. My parents have a cable factory, that is how i know.
That was a very informational contribution. Thank you!
another words, this connecting to PC is nothing but absolutely useless in daily use, no point spending extra 50 quid for this option, thanks for the video!
Hello, I just purchased a similar power supply (ka3005p) and at the first glance it seemed you were right about the connection issue (power supply cannot operate after the software was closed). After several tests I found out that after few seconds from closing the application the power supply recovers by itself (a beep can be heard) and the controls are functional again. Anyway thanks for the great video. A a side note, the software is still full of bugs but I believe that it won't be used by many any way.
I just hope they will release another software update soon and they will fix all of these bugs. It would be a neat thing. I saw this article a while ago but i don't know if this version is better than what I already installed or not and I did not have time to download and install it yet:
www.eevblog.com/forum/testgear/korad-ka3005p-software-update/
If anyone tested it, please share opinions.
It looks like a completely different component's design (horizontally mounted fan) that I have seen in those KA3005P.
maybe they have reiterations or something.
Thanks for the info. The case power up sound probably could do with some rubber grommets on the transformer mounts where it meets the casing.
Could be.
nice video
Is the pop-up message a warning because you have the output enabled? If you disabled the output then maybe you wont get a warning message?
Yeah. I still think it displays that message with that sw version. Meanwhile I tried the updated version and that one seems to be more stable, easier to program and error free. I am talking about the V3.2 30V10A . I already posted the link twice in this thread. Check it.
Hi, is it possible to write a script where the voltage changes with respect to current used?
The latest version of software does that automatically. If you operate the power supply in the CC mode and the load will draw more than what the current is set to, then the voltage will self adjust to whatever the ohm law dictates. It even has the "datasave" option and it will create a log file where you will see all the voltage and current readouts throughout the whole period.
@@FunElectronicsToday Thank you for the comment, I understand that but, I am trying to simulate a battery discharge curve. Where the voltage at the terminal change with respect current to the consumed (charge used(Q)). So let's say at a constant current load of 10A, can the voltage of that supply change from lets say 4V at Q=0 to 3V Q=10ah. This will require current sensing, to calculate charge or can we feed that information in externally. If you can check this out, I would be grateful as these battery emulator cost thousands of pounds.
Thank you!
Aha. Yes. I understand now. I believe you can do that with this power supply. In the latest sw version (V3.2) you can programm voltage, current and time for each step. So you just calculate your battery curve and choose your wattage numbers beforehand and then create your program table into this interface. It should work. If you need more info, contact me over email and we can talk some more.
You should show how crappy is characteristic on oscilloscope.
Yes... It's not that bad for home use or small shops. It's like any other commercial switching power supply, having a maximum ripple of about 100mV pp at some values. Of course this ripple depends a lot of the type and value of load you use and the voltage. At some loads it could be quite small and even neglectible. It seems like the transitions between two different voltages are the noisiest ones. They can generate spikes of 500mV or even 1V. So I Imagine having some inductive load connected to the power supply with a ramp program of 1V step per second can be quite... unlike what I intended to have. :) . So yes, it can be crappy, but the worst part in my opinion is that software interface I was talking in the video. I could live with the noise as long as I could use that software effectively.
thanx!!!
Hello,
Is it possible to just apply current as an output and not choosing also voltage?
Yes. Once the maximum current threshold is reached, the power supply switches to C.C. output mode and then it self-regulates the voltage to maintain that current. So it does that automatically. All you need to do is request that current within your load. For instance, if you want to test an LED, you can do that without having a series resistor attached to it. You just leave the voltage to any value higher than 3V (even to the maximum). You set the current to 10mA and you press on the Off/On button to activate the output. The power supply will just adjust the current through the junction until it self-regulates to that value, regardless of the voltage. After it's self adjusting, you can read the natural forward voltage of the LED on the display.
@@FunElectronicsToday thanks for the reply!
I am actually willing to buy it to test my LEDs. Is there a way we could message privately? I would like to make some questions to you before I buy it. Is it ok for you?
You can check the About section of my channel's page to find out my email address.
Hello, I juste received my K30005p and was surprised that the install for the software in the CD was all in Chinese. Do you know how I can download the English version?
moreover, I realized that the board controlling the USB is an old one. Do you know if yours have a opto coupler on the board?
Try this one: www.eevblog.com/forum/testgear/korad-ka3005p-software-update/
Not sure if it's working or not, but give it a try.
@@FunElectronicsToday Ok, I finally got it to work with the link you provided. Thanks a lot! Last question. Could you tel if yours have opto couplers on the USB control board located at the bottom back of the PSU? They are like two beige square ICs...?
This V3.2 software version works fine. No errors and it's definitely easier to program than the previous one.
@@FunElectronicsToday Ok thanks
Hello my dear, is a Korad an official factory of this Power Supply or is it just a brand?
Good question. I saw the same power supply being branded with TENMA, Vellman, Korad, Wavecom. I don't know which one is the original factory.
@@FunElectronicsToday In Brazil there is an identical model of a brand called Hikari and this yes I know it is imported. Anyway, thank you very much
KORAD has a web site, contact information, downloads,etc., in China. I believe they do private branding, which accounts for the other brands.
The KA3005D/KA3010D is the same as the P models without the remote functions, which I suspect would be adequate for many users
@@jeffreydeutsch7336the D version is also missing an on/off switch for the output, quite a handy feature tbh.
19:00 Have you tried a long press on the lock button to unlock it ?
I tried it just now and it is not working. Completely frozen.
@@FunElectronicsToday Hey ! Thanks for taking the time to try it.
At this date, would you recommend this power supply ? Or do you think there are better options at this price range ?
As you may have guessed, i'm looking to buy a power supply and the TENMA rebranded version of this one seemed like a good choice for me : fr.farnell.com/tenma/72-2540/alimentation-1-voie-30v-5a-prog/dp/2445412
Maybe even the two-output version : fr.farnell.com/tenma/72-10495/alimentation-2-voies-30v-5a-ajustable/dp/2251947
I haven't found any other programmable bench power supply alternative in this price range. It is either this model or rebrands of this model. Anything else is having higher prices. Maybe some other youtubers who are seeing this can come up with other ideas in the comments if they know of different products at this price. So depending on your needs it could be a good choice. It seems to be robust. I've been using it since I made this video and never had any problems with it except for the drawbacks I already mentioned in the video. The double power supply you posted here is not programmable and it does not have any usb or input port. So be careful which model you order according to what you need.
если бы по русски рассказал, - цены бы тебе не было....
Don't really understand Russian that much. I went to the Moldavian Republic last year in November and I only exercised a few expressions. Спасибо