Products > Test Equipment
DC Load - I need some guidance
mvno_subscriber:
--- Quote from: 2N3055 on June 12, 2024, 01:25:33 pm ---Nobody pointed you to this topic:
https://www.eevblog.com/forum/testgear/bk-8550-electronic-load-current-ripple/
Also what applications?
--- End quote ---
Yes, I did find it so I've come to peace with the 10mA current ripple which seems to be standard for DC loads in this price range. I'll still have to use static loads for some testing, so I'll bunch together my existing set of power resistors and make something nice out of them for complementary testing.
Regarding applications, my first will be a power supply I'm building. I want to stress test the supply with regards to heat, current limiting, short ciruited outputs, see whether certain usage patterns may couple into other parts of the circuit, noise levels at different combinations of draw and how it will cope with long term abuse. I'm pretty sure I'll find a bunch of other uses as I get into it as well.
--- Quote from: 2N3055 on June 12, 2024, 01:25:33 pm ---I'm looking at datasheet and it has nothing that my old cheap Maynuo does not have. And Maynuo PC app is more powerful..
--- End quote ---
With PC connection, I guess the sky is the limit. For me, I prefer my bench to be PC-free -- I want all my equipment to stand on their own. Less mental interference. It's my hobby, and I have more than enough computer usage at work. So having a full blown interface in the unit is something I'm willing to pay for.
DaneLaw:
Aint it more or less the same fundamental tests, that go again across many of these programmable electronic loads.
# CC
# CV
# CR
# CP
# Trasnsient
# List/Aut.
# Battery
# LED-DR
# SCAN/SWEEP
# SHORT
# CC+CV *
# CR+CV *
# CP+CV *
// Looks like there are some specific features on some models, even though the testnames vary greatly from brand to brand on what each vendor calls a given mode, while in practise being more or less the same.
The stacked CC/CP/CR+CV (*) feature, where it flips when a max-criteria is met, does not seem that common, GW Instek's more expensive loads seem to have it (PEL3000/5000), and some of the models from East Tester but most don't.
bson:
--- Quote from: mvno_subscriber on June 11, 2024, 05:22:36 pm ---
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
--- End quote ---
I've had a B&K 8600 for about 6 years now with no complaints. If I were looking today however I'd probably get the Siglent SDL-1020X. The main reason is its LXI-11 LAN support for remote instrumentation, and 200W (even the 150W of the B&K 8600) is plenty for anything I ever need. Otherwise I just don't see much difference spec-wise between the B&K and Siglent units. With LAN a GPIB port isn't needed, IMO, so I'd just buy the much better bang for buck Siglent.
mvno_subscriber:
--- Quote from: DaneLaw on June 12, 2024, 09:26:24 pm ---Aint it more or less the same fundamental tests, that go again across many of these programmable electronic loads.
# CC
# CV
# CR
# CP
# Trasnsient
# List/Aut.
# Battery
# LED-DR
# SCAN/SWEEP
# SHORT
# CC+CV *
# CR+CV *
# CP+CV *
// Looks like there are some specific features on some models, even though the testnames vary greatly from brand to brand on what each vendor calls a given mode, while in practise being more or less the same.
The stacked CC/CP/CR+CV (*) feature, where it flips when a max-criteria is met, does not seem that common, GW Instek's more expensive loads seem to have it (PEL3000/5000), and some of the models from East Tester but most don't.
--- End quote ---
Hmm, I thought Sigilent didn't have sweep functionality, did I misread the data sheet?? :o
The devil is in the details here. With Rigol and Sigilent, my impression is that the battery tester feature only supports CC (that was Dave's gripe with the Rigol. I checked out their firmware revision history and it seems that hasn't changed) - whereas with B&K, you have the same CC/CR/CW as in all the other modes. There might very well be other differences too.
(Also, the B&K looks way sexier IMHO 8) )
tautech:
--- Quote from: mvno_subscriber on June 13, 2024, 10:19:50 am ---
--- Quote from: DaneLaw on June 12, 2024, 09:26:24 pm ---Aint it more or less the same fundamental tests, that go again across many of these programmable electronic loads.
# CC
# CV
# CR
# CP
# Trasnsient
# List/Aut.
# Battery
# LED-DR
# SCAN/SWEEP
# SHORT
# CC+CV *
# CR+CV *
# CP+CV *
// Looks like there are some specific features on some models, even though the testnames vary greatly from brand to brand on what each vendor calls a given mode, while in practise being more or less the same.
The stacked CC/CP/CR+CV (*) feature, where it flips when a max-criteria is met, does not seem that common, GW Instek's more expensive loads seem to have it (PEL3000/5000), and some of the models from East Tester but most don't.
--- End quote ---
Hmm, I thought Sigilent didn't have sweep functionality, did I misread the data sheet?? :o
--- End quote ---
Maybe.
SLEW is mentioned on P14
https://int.siglent.com/u_file/download/23_10_09/SDL1000X_programming_guide_E02B.pdf
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