Products > Test Equipment
ET5410 Electronic Load mod: add external sense
Hydron:
I eventually ended up buying a DCL6104A (rather similar to the ET5411), partly to the info given here - my thanks to the other posters.
It may be of interest that I managed to mod that load for remote sense in a very clean manner - the firmware and PCB supported it already, all that had to be done was add a relay and connector. Details are to be found here: https://www.eevblog.com/forum/testgear/et5410-or-dcl6104-or-a-third-programmable-electronic-dc-load-in-the-budget-cat/
Behaviour with the sense mod is similar to the OP's ET5410, but it can be switched from the front panel or via SCPI. No need for protection of heatsink screw on it either - they are nylon.
Is far from a perfect device (along with the other cheap options), but the price was certainly right and it looks like it will meet my needs for something that can do >150V. Note that very low (mA level) currents are a bit inaccurate (especially before my mods), transient/dynamic mode is only half-working (similar or possibly better than the ET5410), and that the minimum CV voltage is a bit high (~1.35V in my case). A quick test suggested that CR/CP battery modes _do_ work with this load, and I also did a CC test of a NiMH cell with a 0.8V cut-off voltage - worked as expected.
Algasman:
I just found this thread, also bought an ET5410 last year, opened it and came to the same conclusion to modify it to enable external sense capability. I even took some pics because I wanted to post instructions for the mod but but forgot about it and unfortunately never did. As soon as I find the time, I will post them here with some comments - stay tuned
cybermaus:
Hi
When last year did you buy, what is your firmware version, and does your battery mode work in CR mode?
Thanks
Algasman:
I ordered it from Banggood in Czechia August 31st and got it September 3rd. Firmware and CR battery mode I have to check, right now the device is stored away because I clean up my hobby room / basement.
But I have the warranty card at hand, date of manufacture is 5.2020, inspected by 05
Algasman:
I tried CR in Battery mode and agree that it does not work. when setting to low current and low voltage mode, it does not even show current flow even though it draws current.
On the attached picture you can check H/W and S/W revision #
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