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Author Topic: How to test negative power rail with electronic load  (Read 1394 times)

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Offline belzrebuthTopic starter

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How to test negative power rail with electronic load
« on: August 04, 2018, 09:20:31 am »
Hi all,
I've got a XHDZ-FZ-2D electronic load module from eBay
https://www.ebay.com/itm/DC-1V-100V-Constant-Current-Source-Electronic-Load-Board-50W-Max-6A-Power-Tester-/232419643651
and wondering if I can use it to with a negative voltage.
The DUT is floating so can I just reverse the leads on the load input terminals?
The schematic for the module are here:
https://drive.google.com/file/d/0B4zALdueXAxdcm1jSWt6Tm9TZXc/view
« Last Edit: August 04, 2018, 09:23:21 am by belzrebuth »
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Online Zero999

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Re: How to test negative power rail with electronic load
« Reply #1 on: August 04, 2018, 01:49:59 pm »
Yes, it can be used to test a negative supply.

No, don't reverse the terminals. Connect the positive to the 0V rail and the negative to the negative power rail.
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Offline belzrebuthTopic starter

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Re: How to test negative power rail with electronic load
« Reply #2 on: August 04, 2018, 04:13:07 pm »
Thanks!
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Offline Mechatrommer

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Re: How to test negative power rail with electronic load
« Reply #3 on: August 04, 2018, 05:36:48 pm »
dont forget to add heatsink to the fleabay module, it can burn out pretty quick for higher load..
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Offline belzrebuthTopic starter

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Re: How to test negative power rail with electronic load
« Reply #4 on: August 04, 2018, 05:42:42 pm »
I have it for quite some time actually; it's in an enclosure with a big heatsink attached to it so no worries.
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