Products > Test Equipment
60W Electronic Load in 2022
baldurn:
I did an experiment with my own humble setup. Mostly because I was curious but also to show that the OP really needs to specify what is meant by "spot on". The Siglent in the picture has a valid calibration certificate. The two Korad are apparently in agreement (measuring 0.048A) yet it is the Siglent that is most correct (measuring 0.049649A). If I program the electronic load for 52 mA you might think it to be "spot on" for 50 mA since both the load and the power supply would measure 50 mA. But it would be wrong. You need the calibration certificate to trust the measurement.
I am not sure why my Korad KEL103 does not correct itself since it is programmed for 0.050A but measures 0.048A - should it not try to sink an extra 0.002A to hit the target? Lucky it is actually much closer to the target than what it measures.
I know OP said he only wants or needs to spend $20 but really something like this Korad KEL103 is not very expensive ($360). How much is your time to try fixing the other cheap solution? I am assuming a few mA off is ok otherwise you need to pay even more money to get something that is certified. Or just measure it like I did and then perhaps correct for any error.
DavidDLC:
I found what I was looking for. I got an accurate enough 60 W Electronic Load.
I took pictures with my portable power supply only, results from my bench power supply shows the same.
The voltage is also very accurate, I measured it with my EEVBlog 121GW DMM, my Fluke 287 and my bench multimeter and all of them are similar
No need for support anymore.
David DLC
DavidDLC:
It also matches close enough to the little USB meter. Again I don't need more sophisticated equipment for this.
Thanks to everybody
David DLC
vk3em:
Hi David,
I am looking for one of these as well. Just to do some simple SLA Battery Capacity and Health tests. Where did you buy yours from?
Thanks
Luke
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