Products > Test Equipment

Kunkin KP184 electronic load : "fixing" an manufacturer issue

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doktor pyta:
Please describe Your test setup.

P.S. link to a thread related to this subject: https://www.eevblog.com/forum/testgear/an-investigation-about-ripple-current-of-kunkin-kp184/new/#new

HumbleBumble:
I have rev 5 pcb. There is no cap, its nice to see they are actively updating. Cal card states tested to within 0.1% with Agilent/fluke. It appears accurate with my uncalibrated kit.

Im concerned if the case was grounded and came into contact with the heat sinks. Ive measured both at positive side volt in respect to ground and wonder if they could short.

I may desolder a mosfet and xray and report back.

Faron:
Hi everyone!

I need your help. The Varistor (marked VDR1 next to the relais and + terminal) blew up. Sadly the face holding the identification is all charred. Can some of you guys have a look into your unit and tell me which type it is? The part-Number (or at least niminal voltage rating) would be awesome.

I just don't want to fly blind and go with a 150/160V type of random rating.

Thank in advance and best greeting!

patman27:
@Faron

You mean this guy?

(o come ye hero and bestow the correct answer)

Faron:
Hello patman27,

yes, exactly!

I'd be sooo grateful for that Part-ID :)

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