seeking little Ge transitor tester project

[LizardKing]

Anyone have a little project to make a tester to test gain and leakage of Ge trannies?
I have a collection of trannies I'd like to test and mark for future projects and wouldn't mind
making a neat test fixture to do it with!

[Soup39]

I think I have a spare etched board.  let me check the stack, if I do it's yours.

[LizardKing]

I think I have a spare etched board.  let me check the stack, if I do it's yours.

That is very nice, but I can etch my own boards if you can lead me to the docs.
Even the name of the project would help, I've googled up nothing!

[selfdestroyer]

Rullywow made one  sometime ago and I think it was verified.

https://drive.google.com/file/d/0B7EnzxavIi5_dkYyWXJPSXdlWlE/view?usp=sharing

Give it a try.

Cody

[Soup39]

funny, the extra I have is rullywow. 

[LizardKing]

funny, the extra I have is rullywow.

IC, never heard of it.
That link gives me a:
We're sorry. You can't access this item because it is in violation of our Terms of Service.

Are y'all referring to this: http://www.rullywow.com/jfet-matcher-project-vgsoff/ ?
I did find the build docs with the pcb so I can etch one, THANKS!
Does anyone use an old Heathkit transistor testor such as an IM30?
I think I have one somewhere....

[davent]

That one serves a different purpose. Here's a vero layout for a tester, if you add another strip of vero at the top and jumper it to the "E" strip you can test any transistor pinout without having to contort the leads.

http://tagboardeffects.blogspot.ca/2012/08/germanium-transistor-tester.html
dave

[LizardKing]

That one serves a different purpose. Here's a vero layout for a tester, if you add another strip of vero at the top and jumper it to the "E" strip you can test any transistor pinout without having to contort the leads.

http://tagboardeffects.blogspot.ca/2012/08/germanium-transistor-tester.html
dave

Ah yes, this is the one that had wondering if someone had ever made a little project that didn't require a dmm or any math (direct reading).
I am thinking the answer is not.
Anyone interested in such a thing?
A cheap lcd, and arduino, and a simple board with power could be whipped up without too much trouble...

[davent]

There's a little cheap chinese bare bones meter available that does a pile of useful tests for us outside the DMM realm, someplace 'round here there is a link. Not sure is does leakage but that's easy enough to test for.

[culturejam]

There's a little cheap chinese bare bones meter available that does a pile of useful tests for us outside the DMM realm, someplace 'round here there is a link. Not sure is does leakage but that's easy enough to test for.

I got a cheap Chinese tester and it does everything (resistors, capacitors, inductors, transistors), including leakage. It even measures ESR for electrolytic caps.

Here's more info:
http://www.madbeanpedals.com/forum/index.php?topic=16393.0

[davent]

Yup, that's the one i was thinking of, thanks!
dave

[culturejam]

I use mine all the time. Basically, I use it for everything that isn't testing voltage or current draw.

[LizardKing]

Doing the research on this project, thanks!