cobra_kai Posted February 15, 2012 Report Posted February 15, 2012 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
Craig Sawyers Posted February 16, 2012 Report Posted February 16, 2012 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.
cobra_kai Posted February 16, 2012 Report Posted February 16, 2012 (edited) 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, 2012 by cobra_kai
JoaMat Posted February 17, 2012 Report Posted February 17, 2012 (edited) / Edited November 12, 2015 by JoaMat
JoaMat Posted March 8, 2012 Report Posted March 8, 2012 (edited) / Edited November 12, 2015 by JoaMat
deepak Posted March 9, 2012 Report Posted March 9, 2012 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?
Lil Knight Posted March 9, 2012 Report Posted March 9, 2012 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?
ujamerstand Posted March 9, 2012 Report Posted March 9, 2012 That's awesome! What are you using for the volume control?
JoaMat Posted March 9, 2012 Report Posted March 9, 2012 (edited) / Edited November 12, 2015 by JoaMat
JoaMat Posted March 9, 2012 Report Posted March 9, 2012 (edited) / Edited November 12, 2015 by JoaMat
Nebby Posted March 9, 2012 Report Posted March 9, 2012 Any chance you can post some internal pics, JoaMat?
JoaMat Posted March 9, 2012 Report Posted March 9, 2012 (edited) / Edited November 12, 2015 by JoaMat
blubliss Posted March 9, 2012 Report Posted March 9, 2012 I like your test point thingies, what are those?
ujamerstand Posted March 9, 2012 Report Posted March 9, 2012 I like your solution to the chassis mounting brackets. Nicely done!
JoaMat Posted March 9, 2012 Report Posted March 9, 2012 (edited) I found the test points at Mouser. Link:https://se.mouser.co...ualkey534-11011 Edited November 12, 2015 by JoaMat
spritzer Posted March 9, 2012 Author Report Posted March 9, 2012 Very nice and now my Mouser is in Swedish. Seems appropriate since I just got off the phone to Sverige....
kevin gilmore Posted March 9, 2012 Report Posted March 9, 2012 Inu still holds the record for attempting to do powder coating in his old kitchen stove.
Nebby Posted March 9, 2012 Report Posted March 9, 2012 Inu still holds the record for attempting to do powder coating in his old kitchen stove. how did that work out? o.O
kevin gilmore Posted March 9, 2012 Report Posted March 9, 2012 I believe he had to sleep on the couch a couple of days!
JoaMat Posted March 9, 2012 Report Posted March 9, 2012 (edited) / Edited November 12, 2015 by JoaMat
Kerry Posted March 10, 2012 Report Posted March 10, 2012 (edited) 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, 2012 by Kerry
JoaMat Posted March 10, 2012 Report Posted March 10, 2012 (edited) / Edited November 12, 2015 by JoaMat
Pars Posted March 10, 2012 Report Posted March 10, 2012 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?
JoaMat Posted March 10, 2012 Report Posted March 10, 2012 (edited) Thanks Pars. Forgot to check for info on k216. Edited November 12, 2015 by JoaMat
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