Products > Test Equipment

Wires connected without banana to binding posts (Rigol DP832 power supply)

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David Hess:

--- Quote from: Russ_A on November 06, 2024, 03:25:49 pm ---On my Korad power supply I took it apart so that I could re-orient all of the posts to have the post holes at a 45 degree angle. Was relatively easy to do. Makes getting wires in there quite a bit easier.
--- End quote ---

I will have to do that on mine.  I am in the process of refurbishing one PS503A and then I can swap them and do the other one.

RoGeorge:
Found a workaround!  :D

What bothered the most with the faulty binding posts:
- the hole was too far from base, thus tending to snip the wire
- the plastic edges were too high, such that the wire was not squeezed against the metal parts

At first I thought I might add an extra metal washer, and somehow solder the washer there.  Not really doable.  Then I've thought the washer can sit as well around the wire.  Then I've realized I can just tie a knot on the wire strands.  ;D

rwaters:
Google banana spade adapter. Amazon, Digikey etc etc. Really nice ones from Pomona P/N 2305

coppercone2:


coppercone2:
you know why you should replace it? Because it sounds defective. I.e. it can crack and then slide into the power supply and blow it up


I had this tomfoolery on my current source i bought on ebay. A creative person thought he can fix it with JB weld and super glue. When I unplugged a banana connector the banana plug metal bit came out of the chassis , energized at 100VDC, almost shorting out to the chassis

If you see common stuff that has like a obvious defect, in a electronics lab, its wise to just assume its a bad idea to use it

Wanna bet its made with sub standard plastic, shady additives, not tempered properly/manufactured with poor temperature control, and other defects (I am not a plastics expert)

Slides right out like a trombone


This situation with shady connectors (that can result in loose metal in the chassis) is precisely how a low voltage DC supply can turn dangerous. Such a bad habit to have in the lab with mains connected equipment. Or large batteries.


Usually you should be happy about a major mechanical design flaw that you find on a part. Because it usually is hiding something else. Its like getting a friendly warning.

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