DIY Curve Tracer for JFETs - diyAudio
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Old 7th August 2013, 08:25 PM   #1
mlloyd1 is offline mlloyd1  United States
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Location: Northern Iliinois
Default DIY Curve Tracer for JFETs

for folks that are interested in more extensive jfet matching than idss only and have a scope and function generator (which of course, you can also diy), just sharing a link that i haven't found posted elsewhere on the site (however, i did notice that EUVL makes mention of the technique in at least one of his posts).

link to project description

(who often misses access to his ancient boat anchor tektronix curve tracer back at the old job ...)
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Old 8th August 2013, 06:01 AM   #2
RNMarsh is offline RNMarsh  United States
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Location: 2457 Cascade Trail; Cool, CA. 95614
Nice article..... I too had a TEK 576.... took up a lot of bench real-estate. I donated it to a local 2 year tech school. I replaced it with a similar new product made in China... it also lets you see two devices at the same time on the CRT (-yes, a real CRT) screen over-lapped for matching. Smaller, lighter. And the old TEK adapters work with it!
* [ SMT Max, Model CA4810A]

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Old 23rd August 2013, 04:19 AM   #3
RNMarsh is offline RNMarsh  United States
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On ebay, you can now get a characteristic curve tracer that operates with a PC for display.

Look for: locky_Z. he has an Intelligent Curve Tracer he designed and built and now a few are for sale -- limited quantity have been made so far.

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