Germanium leakage tester help

[Luke51411]

I built RGs tester and it's not working correctly. I built it on Vero and breadboard and it's doing the same thing. It reads around 220mv at first and steadily decreases and when I push the button it reads 0. I'm using the cheap Chinese tester to determine the pinout. I'm guessing maybe it's incorrect? I tried MP20a and gt308v trannies both with the same issue.

[Luke51411]

Of note, I've built several FF style circuits and tried out transistors. I just went off of the gain and pinout from the Chinese tester thing and they all worked and sounded good.

[Canucker]

could you post the layout, schematic for the tester?

[Luke51411]

Sorry, I should have added the link in my first post.
tagboardeffects.blogspot.com/2012/08/germanium-transistor-tester.html
http://www.geofex.com/Article_Folders/ffselect.htm

[greaser_au]

Luke, 

This is a VERY simple circuit.  Can I suggest you might test it with a  PNP silicon device  (the figures will be bogus, but you will know whether it works or not)?

Use the data sheets to find the pinouts - many sellers of russian devices include data sheets in their ebay listings, but beware of ones that have been 'translated'.

david

[Luke51411]

I know it's very simple, I have enough builds under my belt I should be able to get this working. I'm sure I'll be embarrassed when I figure it out. I was just thrown off when I built it on a known good layout and bb with the same results... I'll try some Si devices out.

[duck_arse]

it's only 2 resistors and a switch. why do you need a layout?

[Luke51411]

I don't know because it exists I guess... I figured I must be doing something else wrong since I got the same results either way...

[Luke51411]

What would cause a 0v reading when the 2m2 to ground is connected to the base? Seems like a bad pinout to me but if I use the same pinout and install them in a fuzz circuit they work and sound Good! Again... I think I'm going to feel like an idiot when I figure this out but for now something is throwing me off.