Print Page - What can I build with these? Germ Transistors

Title: What can I build with these? Germ Transistors
Post by: Beedoola on April 24, 2015, 07:03:18 PM

I have 7 germanium trannies from previous projects that didn't work or I can't remember why.

What can I built with these?

(2) - 2N404A

(2) - Hitachi 2SB77

(2) - 2N404A

(1) - only markings are on top and read: 1N 1C GD

(1) - 3AX31C

Thanks.

Title: Re: What can I build with these? Germ Transistors
Post by: midwayfair on April 24, 2015, 07:13:36 PM

Lots of stuff. Many vintage fuzzes. Measure the gains and leakages.

Title: Re: What can I build with these? Germ Transistors
Post by: Beedoola on April 24, 2015, 09:37:41 PM

Quote from: midwayfair on April 24, 2015, 07:13:36 PM
Lots of stuff. Many vintage fuzzes. Measure the gains and leakages.

Details, please.

Title: Re: What can I build with these? Germ Transistors
Post by: davent on April 24, 2015, 09:44:26 PM

Rangemaster, that will take care of one of your transistor and doesn't need to be one with a very high hfe to give you a usable circuit, bread board to your hearts content.
dave

Title: Re: What can I build with these? Germ Transistors
Post by: Luke51411 on April 24, 2015, 09:44:58 PM

Read this article http://www.geofex.com/Article_Folders/ffselect.htm (http://www.geofex.com/Article_Folders/ffselect.htm)
Part numbers don't matter as much as gain and leakage. Measure that first and then we can figure out what you can build.

madbeanpedals::forum

General => Open Discussion => Topic started by: Beedoola on April 24, 2015, 07:03:18 PM