Products > Test Equipment
Inside the new Korad KA3305P linear PSU
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torch:

--- Quote from: torch on September 09, 2015, 01:02:36 pm ---Here is a short video showing the M4 bug:

http://picturehosting.verhey.org/korad/Korad_M4_bug_conv.flv
--- End quote ---

Update: I contacted the US distributor with a description of the problem and the above video link, but so far I've heard nothing but crickets. I have now submitted it to Korad via a feedback form on their website. We'll see what happens, but I imagine they've all gone home for the weekend by now.
torch:
Update:

The US distributor advises that Korad has fixed the problem, they have the fix, and they have tested the fix.

The bad news is I have to send my unit back for the repair. For some reason it can't be just e-mailed and uploaded by me.
Kleinstein:
The bug ist likely a software error. But the powersupply may not have the option to do software update vial USB. In addition they may not want to give away there software without the small amount od protection of the µC - so they may preferre to pay postage for the few early users that realy care about the bug.
torch:

--- Quote from: Kleinstein on September 19, 2015, 11:04:56 am --- In addition they may not want to give away there software without the small amount od protection of the µC - so they may preferre to pay postage for the few early users that realy care about the bug.
--- End quote ---

That makes the most sense -- they are afraid the firmware will eventually get into the hands of potential clones.

$5 says it's roots are open source though  ;)

Anyway, it's good to hear that they have produced a fix, even though it's a PITA to ship this thing back.
Hydrawerk:

--- Quote from: torch on September 09, 2015, 01:02:36 pm ---Here is a short video showing the M4 bug:

http://picturehosting.verhey.org/korad/Korad_M4_bug_conv.flv

(Sorry for the separate link. I'm not sure how to embed a video here.)

--- End quote ---
Just paste the youtube link.

--- Code: ---https://www.youtube.com/watch?v=g94mpom2Ahs
--- End code ---


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