Products > Test Equipment
DC Load - I need some guidance
tautech:
--- Quote from: mvno_subscriber on June 11, 2024, 05:22:36 pm ---
--- Quote from: DaneLaw on June 11, 2024, 02:18:56 pm ---You keep referring to this Siglent SDL2021X-E in numerous posts.. Im not familiar with that model and I guess your a thousand too high.
Have you examined a bit, perhaps watched or read a few reviews of modern programmable electronic loads.?
--- End quote ---
Oops, yes, sorry. For some reason these model numbers get fuddled around in my head. For clarity, here are the datasheets of the loads I'm considering:
ManufacturerModelDatasheetSigilentSDL-1000X serieshttps://siglentna.com/wp-content/uploads/dlm_uploads/2024/05/SDL1000X_DataSheet_DS0801X-E01F.pdfB&K Precision8550https://bkpmedia.s3.us-west-1.amazonaws.com/downloads/datasheets/en-us/8550_Series_datasheet.pdfRigolDL-3000 serieshttps://beyondmeasure.rigoltech.com/acton/attachment/1579/f-0778/1/-/-/-/-/DL3000_DataSheet_EN.pdf
I've mostly discarded Rigol, as it has a fan that is constantly on. I hate that. Also, the Rigol business model of having artificially crippled units with payable unlockables is something that makes me feel kind of cheated.
Sigilent seems to have good models that are easily hackable when the time comes. However, there is a huge price gap between different models that don't really offer much extra (and the insides are identical, as far as I could tell). So a bit like Rigol, however not as bad.
B&K seems to have the most features software-wise, for example frequency sweep to check for PSU ringing, load regulation testing and CC/CR/CW mode in battery testing. It doesn't have USB or LAN, however. Not that it matters much to me, but is somewhat puzzling. Weight is also low compared to the others, which makes me suspect more fan noise. Or cheaper build.
Dave did a teardown of the Rigol -- Sigilent and B&K is much more difficult to find. I've located some scraps of information on this forum, but nothing that really tells me much. I do wonder if the added price of the B&K translates to better build (and/or less current ripple?).
--- End quote ---
https://www.eevblog.com/forum/testgear/siglent-sdl1000xsdl1000x-e-electronic-load/
Defpom teardown vid is reply #80
Martin72:
You can choose from:
https://www.batronix.com/versand/last/SDL1020X-E.html
Easily make this:
https://www.batronix.com/versand/last/SDL1030X.html
I've been working with it a bit, it's making a good impression so far - but I'll do a proper test with it when time finally allows and post it in the forum.
I have all the resources for it, I still have to get a battery, if you want to determine the ripple of the load, a regulated power supply makes little sense as a source.
When I have that, I'll get started.
mvno_subscriber:
I took the plunge. I ordered the B&K 8550. I just knew that if I had ordered the Sigilent, I wouldn't stop thinking about the features set of the 8550. It fits me and my needs - hopefully.
If any are interested, I can post back when I get around to using it (not this week, but maybe next), since there is very little to find online about this load. If there are specifics you'd like to know, post here and I'll whip up some images and/or videos when the time comes.
Right now I'm just empty inside after having spent all that money, but I know I'll appreciate it in due time :)
nctnico:
--- Quote from: mvno_subscriber on June 12, 2024, 08:21:29 am ---I took the plunge. I ordered the B&K 8550. I just knew that if I had ordered the Sigilent, I wouldn't stop thinking about the features set of the 8550. It fits me and my needs - hopefully.
If any are interested, I can post back when I get around to using it (not this week, but maybe next), since there is very little to find online about this load. If there are specifics you'd like to know, post here and I'll whip up some images and/or videos when the time comes.
--- End quote ---
:-+
I would highly appreciate it if you can share your experiences with the B&K 8550 . Actually I have been trying to buy the Tonghui version but didn't want to risk ordering it from Asia so I'm (still) really curious about how it works.
2N3055:
--- Quote from: mvno_subscriber on June 12, 2024, 08:21:29 am ---I took the plunge. I ordered the B&K 8550. I just knew that if I had ordered the Sigilent, I wouldn't stop thinking about the features set of the 8550. It fits me and my needs - hopefully.
If any are interested, I can post back when I get around to using it (not this week, but maybe next), since there is very little to find online about this load. If there are specifics you'd like to know, post here and I'll whip up some images and/or videos when the time comes.
Right now I'm just empty inside after having spent all that money, but I know I'll appreciate it in due time :)
--- End quote ---
Nobody pointed you to this topic:
https://www.eevblog.com/forum/testgear/bk-8550-electronic-load-current-ripple/
Also what applications?
I'm looking at datasheet and it has nothing that my old cheap Maynuo does not have. And Maynuo PC app is more powerful..
Anyways, good luck and like Nico says, let us know how it goes...
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