Author Topic: Review of the Korad KEL103 programmable load. (Read 25402 times)

ahope · « **Reply #25 on:** August 19, 2020, 01:55:05 pm »

Yes, I am looking for a short. Not found one so far, only the broken caps.
There is some resistance (kohms) between output of the 7812 and ground, so no "hard" short. I came across those broken caps while searching for the short.

I will keep looking for that short. I am considering solder out the 7812 and insert probes between output of the 7812 to see power draw.

HKJ · « **Reply #26 on:** August 23, 2020, 11:24:04 am »

I was rather interested in this load: Cheap with build-in network and serial connection.

I got one and have added it to TextController https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/

I like it uses a LED display. The network interface uses UDP, that is not the best for instrument control, but I got it working.

graybeard · « **Reply #27 on:** February 24, 2021, 04:50:54 pm »

Newark (Farnell) has rebranded the Korad loads from Tenma to MulticompPro.

Currently the 300W unit (Korad KEL103) is $255

The 150W model is $205

nightfire · « **Reply #28 on:** February 24, 2021, 08:43:14 pm »

Other rebrands/rebadges are Stamos Soldering S-LS-60 and S-LS-61, respectively 150W/300W.
Got mine via german ebay, also sold on Amazon.

Electro Fan · « **Reply #29 on:** February 25, 2021, 07:49:57 am »

Quote from: graybeard on February 24, 2021, 04:50:54 pm

Newark (Farnell) has rebranded the Korad loads from Tenma to MulticompPro.

Currently the 300W unit (Korad KEL103) is $255

The 150W model is $205

Those are pretty nice prices. They must be overstocked or something.

Hydron · « **Reply #30 on:** February 25, 2021, 08:56:10 am »

Those prices are similar to CPC's (basically farnell's budget division), and have been around that mark for quite a while. The only reason I didn't get one myself is I wanted higher voltage capability (which meant going for one of the banggood options and then making some mods).

graybeard · « **Reply #31 on:** February 26, 2021, 06:38:43 am »

I emailed Shenzhen Korad Technology Co., Ltd. yesterday and asked them to send me the latest version of the manual for the KEL103. Krissy Yang emailed me version 2.10 of the Korad KEL102 & KEL103 electronic load manual a few hours ago. It seems to be a newer version than anything I could find online.

The pages are in a odd jumble of an order, but seem to be all there.

todorp · « **Reply #32 on:** February 26, 2021, 02:33:12 pm »

I would like to get the Korad KEL103. I am in Italy. Can someone suggest a reliable source where to buy the KEL103. Thanks a lot,
Tod

p.s. Is it possible to buy this directly from Shenzhen Korad Technology Co., Ltd?

masterx81 · « **Reply #33 on:** February 26, 2021, 03:24:31 pm »

I'm also from italy, and i've bought mine from eleshop.nl.
By now it not has too good prices.

Saskia · « **Reply #34 on:** February 26, 2021, 08:17:04 pm »

does Reichelt deliver to Italy ? they usually have it in stock (it's where I got mine)

todorp · « **Reply #35 on:** February 26, 2021, 08:41:13 pm »

At the current moment I see these prices:

KEL102 KEL103
Reichelt 256 Eu 400 Eu
Eleshop 299 Eu 349 Eu

These prices include VAT but exclude shipping. Too much. AliExpress prices are more convenient and I am tempted to try it...
Also do you think rebranded Tenma from Farnell is good quality?

nightfire · « **Reply #36 on:** February 26, 2021, 09:05:50 pm »

Quote from: graybeard on February 26, 2021, 06:38:43 am

I emailed Shenzhen Korad Technology Co., Ltd. yesterday and asked them to send me the latest version of the manual for the KEL103. Krissy Yang emailed me version 2.10 of the Korad KEL102 & KEL103 electronic load manual a few hours ago. It seems to be a newer version than anything I could find online.

The pages are in a odd jumble of an order, but seem to be all there.

They are sorted in a way that they can be printed and then stapled together to get a brochure ;-)

nightfire · « **Reply #37 on:** February 26, 2021, 09:08:24 pm »

Quote from: todorp on February 26, 2021, 08:41:13 pm

At the current moment I see these prices:

KEL102 KEL103
Reichelt 256 Eu 400 Eu
Eleshop 299 Eu 349 Eu

These prices include VAT but exclude shipping. Too much. AliExpress prices are more convenient and I am tempted to try it...
Also do you think rebranded Tenma from Farnell is good quality?

My KEL02 is also rebranded, and as I took it apart, it seemed to be only cosmetic stuff like exchanging the label on the front and changing the ident string from the electronics...

So I would guess that the other rebrands/rebadges also uphold a certain quality.

todorp · « **Reply #38 on:** March 14, 2021, 12:07:14 pm »

Hello is there a pious soul who could share a link with the Korad Kel103 CD software? I bought mine from AliExpress and it arrived without any CD. I could not find anything in Internet by Googling.

Thanks a lot,
Tod

HKJ · « **Reply #39 on:** March 14, 2021, 12:15:19 pm »

Quote from: todorp on March 14, 2021, 12:07:14 pm

Hello is there a pious soul who could share a link with the Korad Kel103 CD software? I bought mine from AliExpress and it arrived without any CD. I could not find anything in Internet by Googling.

You could install this software: https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/
It supports the KEL103 and a few hundred other pieces of test equipment.

todorp · « **Reply #40 on:** March 14, 2021, 12:24:26 pm »

@HKJ Thanks, I will try it

Grandchuck · « **Reply #41 on:** March 24, 2021, 05:22:38 pm »

I have a Multicomp MP710259 (which I assume is equivalent to the KEL103 and the Tenma 72-13210). The software supplied on CD ROM was version 4.1 and is useable now, but it took some experimenting. I am using the supplied USB cable. One help is to open the folder found in Program Files (x86) and change the permissions by right clicking the Configuration settings files, select Properties, then Security, then Users, then Edit, then Users and finally Allow so those files can be written to by the program.

When using the graphs, you can click on the min and max values and change the scales. Also, you can right-click a chart and then clear it.

I hope some others discover more about this software as it seems at least somewhat useful. Thus far, I am liking this electronic load a lot!

HKJ · « **Reply #42 on:** March 24, 2021, 06:36:32 pm »

Quote from: Grandchuck on March 24, 2021, 05:22:38 pm

I hope some others discover more about this software as it seems at least somewhat useful. Thus far, I am liking this electronic load a lot!

For another software check https://www.eevblog.com/forum/testgear/program-that-can-log-from-many-multimeters/
The current version do not support the load, but next version will (It only requires a small change in a definition file and information about it is posted in reply #1526).

ichtier · « **Reply #43 on:** April 10, 2021, 08:51:44 am »

Quote from: subliti on August 11, 2020, 08:48:30 am

Also here some clarification about the unit/manual:
The manual is garbage. For example...in battery test mode you have to specify (even if you dont need it) a max discharge time limit and consumed AH limit. The manual states that this is in seconds (discharge time) but this is wrong. You can set the max time to 9999, but this is minutes and not seconds. The same with AH, its 9999 AH.
The manual is also wrong/confusing with different other things.

Yep, it quite confused me cause it counts somewhat like seconds right to the dot but these are actual hundredth of a minute.

I like the unit with the simple and very clear segment display.
A bit annoying is the fan on the heatsink at the front area that turns on 100% when going above 2 A load. Is that some kind of shunt / measuring construction?
Also sometimes the main fan is not switched off although load is turned off and the heatsink is cooled down. Don't understand the magic behind this yet. ^^

Bravo · « **Reply #44 on:** July 06, 2021, 01:48:18 pm »

Yes it is possible to buy from the factory for US$309 excluding shipping. I think it will be cheaper from Ali or Bangood.
If you going to buy from Ali, ask the store if they have stock for immediate dispatch, otherwise you will end up like me, & have to cancel the order & wait for a refund because they can't get stock in time.

techcornertv · « **Reply #45 on:** July 19, 2021, 07:01:29 pm »

Hey,

This topic has some time now, but I made last week a review on the KEL102 (comparing also with KEL103) if anyone is interested.

and the written article

https://techcorner.tv/eletronics/korad-kel102-kel103-programmable-dc-electronic-load/

I liked a lot, is part of my workbench now. In europe you can have your delivere (KEL102) for 162€ with free shipping. I believe it delivers also in USA for the same value ~ $190...
Links on the article and in the video description.

Cheers,
Hugo

sp9bsl · « **Reply #46 on:** August 10, 2021, 10:35:15 am »

Hi,
just a silly question - what is adjustment resolution in CR mode? I can't find it reviewed in any video. It is very useful in testing limit of SMPS.

guymo · « **Reply #47 on:** November 28, 2021, 10:31:19 am »

Does anyone have experience of the dynamic CC capability of the KEL102/103? I am looking to make transient response tests for some power supplies. I have a DC load here whose dynamic mode does not meet its advertised spec by a long way and is incapable of generating a transient that a PSU notices... (maybe for another thread.)

Is the Korad capable of generating useful transients?

Hydron · « **Reply #48 on:** December 06, 2021, 11:23:07 am »

Quote from: guymo on November 28, 2021, 10:31:19 am

Does anyone have experience of the dynamic CC capability of the KEL102/103? I am looking to make transient response tests for some power supplies. I have a DC load here whose dynamic mode does not meet its advertised spec by a long way and is incapable of generating a transient that a PSU notices... (maybe for another thread.)

Is the Korad capable of generating useful transients?

Wouldn't happen to be an EastTester or Dingchen unit would it?

I second the interest in this - I'd also like something affordable that can do this as advertised.

masterx81 · « **Reply #49 on:** December 22, 2021, 10:42:54 am »

I want to add that the device can be used as current limiting device. In Constant Current Mode, the voltage drop across it without Current limiting acting is almost 0v. I've had the need to test a device using it's Power supply and I've had the need to Current limit it. The response to sudden load changes is quite fast. Can do something that isn't designer for. Quite Happy with it. Excluding the user interface😅


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Author Topic: Review of the Korad KEL103 programmable load. (Read 25402 times)

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