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Registered Member #3040
Joined: Tue Jul 27 2010, 03:15PM
Location: South of London. UK
Posts: 237
Look it's Christmas, cut me some slack
[Edit: Someone had to edit the Width tag because the original poster is a lazy old slacker.] (Edit: apologies, I had a 400 wide version link but accidentally used the link for a wider version and didn't notice)
Registered Member #607
Joined: Tue Mar 27 2007, 10:39AM
Location:
Posts: 64
These two may help you on your way...
Instruments of Amplification - Fun With Homemade Tubes, Transistors, And More. & The Voice Of The Crystal - How To Build Working Radio Receiver Components Entirely From Scratch.
Both by H. P. Friedrichs.
"Instruments" got me into making my own valves after visiting the Vintage Wireless and TV museum in Dulwich, UK.
If I recall correctly, he used copper oxide in one homemade transistor and a vintage 1N34 diode (the type you can unscrew) for another.
Registered Member #1221
Joined: Wed Jan 09 2008, 06:17PM
Location: Odense, Denmark
Posts: 196
These people have a few smaller pieces of Germanium it seems, although getting it to the states might prove dificult.
I dont supose you need this much or wish to spend that kind of money on it but check this one anyway, I think its "semiconductor grade" like you asked for.
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Germanium
