Any thoughts from people more experienced with test equipment on this curve tracer? http://www.diyaudio.com/forums/group-buys/206794-gb-diy-curve-tracer-pc.html

Looks like low voltage and low current. Which is fine for vanilla transistors, but no use at all for testing T2 transistors, which are all high voltage high current types. When I built my T2 with counterfeit 2SC3675's with low breakdown voltage (but still several hundred volts) I needed to throw a Tektronix 577 at them to diagnose why the T2 was in terminal destruct mode. And then to verify that the new ones were correct according to the specification. I just about had to replace every bit of silicon on the heatsinks (and as you know there is a lot of them!) and most of the LED's.

Yes I was concerned about the voltage. I believe in the related thread someone said it can handle up to 3A of current though. Still kind of useless if it can't handle the voltage though, thanks for the input.

Confirmed from the designer - it can do 2.5 amps but only 36 volts. So not even close to being useful for T2/KGSSHV transistors.

Edited February 16, 201214 yr by cobra_kai

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Edited November 12, 201510 yr by JoaMat

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Edited November 12, 201510 yr by JoaMat

Nice!

After a week skiing and recharging batteries I´ve solved the problem with the T2.

Knock nock on wood. It has been working for a couple of hours now.

Below is a pitchure of my T2 - simple case but I´m happy.

Mind telling us what the solution was?

Below is a pitchure of my T2 - simple case but I´m happy.

Congrats!

What's the height of your chassis? Also, how hot does it run without any venting holes?

That's awesome! What are you using for the volume control?

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Edited November 12, 201510 yr by JoaMat

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Edited November 12, 201510 yr by JoaMat

Any chance you can post some internal pics, JoaMat?

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Edited November 12, 201510 yr by JoaMat

I like your test point thingies, what are those?

I like your solution to the chassis mounting brackets. Nicely done!

I found the test points at Mouser. Link:https://se.mouser.co...ualkey534-11011

Edited November 12, 201510 yr by JoaMat

Very nice and now my Mouser is in Swedish. Seems appropriate since I just got off the phone to Sverige....

Inu still holds the record for attempting to do powder coating in his old

kitchen stove.

Inu still holds the record for attempting to do powder coating in his old

kitchen stove.

how did that work out? o.O

I believe he had to sleep on the couch a couple of days!

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Edited November 12, 201510 yr by JoaMat

Nice How's the stability since the ski trip?

I remember Inu's powder coating looking very nice and Kevin's warning about doing things like that.

Two days on the couch... might be worse for me -> <- wife

Edited March 10, 201214 yr by Kerry

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Edited November 12, 201510 yr by JoaMat

If you search this very thread, there seems to be quite a history of fake K216s, as well as some advice on how to test them?

Thanks Pars. Forgot to check for info on k216.

Edited November 12, 201510 yr by JoaMat