Anyone know how to make transistors? - diyAudio
Go Back   Home > Forums > Design & Build > Parts

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 25th December 2009, 03:20 PM   #1
diyAudio Member
 
Join Date: Mar 2009
Default Anyone know how to make transistors?

Apparently it's quite possible to make your own transistors, anyone here done this? There was some books printed in the 50s on how to do so, not much showing through google searches at the moment though I'm really hoping something turns up
  Reply With Quote
Old 25th December 2009, 05:37 PM   #2
jcx is offline jcx  United States
diyAudio Member
 
Join Date: Feb 2003
Location: ..
FET Transistor Homemade From Cadmium Sulfide Photocell.

http://www.andaquartergetsyoucoffee....eriments-i.pdf

I don't know if these worked but should provide search terms

Last edited by jcx; 25th December 2009 at 05:43 PM.
  Reply With Quote
Old 25th December 2009, 08:26 PM   #3
diyAudio Member
 
Join Date: Mar 2009
Cheers at least there's some info around at least! Must be more lying about...
  Reply With Quote
Old 25th December 2009, 08:49 PM   #4
Banned
 
Join Date: Jan 2008
Blog Entries: 2
How to make transistors is well known, but as for making your own, with any kind of repeatability, no. You might be able to cobble together something that would produce amplification by bodging together some existing components into a FET, but you need pure crystalline silicon of a high grade to start with to make a BJT. I don't see how you could make this at home. Of course there are other materials such as germanium or diamond and more exotic ones like gallium arsenide, but I don't think these are necessarily any more accessable or easy to work with.

Any FET you make will only have the same kind of appeal as a crystal radio, although this is not to be dismissed, it's nice to see simple principles demonstrated. I couldn't get the black strap iron diode to work, I had to go for a germanium one.

If you had a wafer, creating a mask on it and diffusing some dopant might be doable, but I'm not sure you could really claim to have made a transistor even then. Making a triode valve is more reachable. You don't see people wearing masks in films of valve factories like you do in semicon fabs, although maybe they do now...

w
  Reply With Quote
Old 25th December 2009, 10:39 PM   #5
diyAudio Member
 
Join Date: Mar 2001
Location: Auburn, WA (somewhere between Seattle and Tacoma)
Blog Entries: 1
Send a message via ICQ to Damon Hill
There's some fellow in France who makes all of his own tubes, completely. Do a search on Youtube under "hand making vacuum tubes". I was amazed by his craftsmanship; appears to be all triode devices.

YouTube - hand making vacuum tubes Part 1

Making semiconductor devices seems to be a challenge, but some bright and determined person may be doing it. Vacuum state technology is obviously simpler in both principle and practice.
  Reply With Quote
Old 26th December 2009, 12:31 AM   #6
poynton is offline poynton  United Kingdom
diyAudio Member
 
poynton's Avatar
 
Join Date: Mar 2005
Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)
Quote:
Originally Posted by Test Electrix View Post
Apparently it's quite possible to make your own transistors, anyone here done this? There was some books printed in the 50s on how to do so, not much showing through google searches at the moment though I'm really hoping something turns up
I had an old copy of "Wireless World" from around 1954 which showed how to make a point contact transistor from 2 similar diodes.

IIRC, it was very clumsy and 'Heath-Robinson' using lab stands to hold the parts.

All-in-all, not a usable idea !


Andy


.
__________________
If it ain't broke, break it !! Then fix it again. It's called DIY !
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Make it worse to make it better??? moray james Planars & Exotics 23 12th May 2008 12:08 PM
Best transistors YUTK Solid State 1 20th May 2005 05:16 PM
How make make a microchip, from a program? multiplexor Everything Else 1 20th February 2004 02:24 PM
transistors lemondog Swap Meet 5 1st March 2002 08:05 PM


New To Site? Need Help?

All times are GMT. The time now is 05:50 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2