Diy transistor

The tools needed to build transistors from scratch are not common tools in home labs. Here are some of the less common tools: • Nitrogen tank • Kiln • Hydrofluoric acid (HF) • Phosphosilicate film • Prime silicon wafers • Vinyl sticker replaces the photoresist of the mask • Color table to identify the thickness of the oxide layer Reference details: https://www.newbecca.com/product/41286648220 https://img.alicdn.com/imgextra/i4/2207691322/TB2m.YxaN6I8KJjSszfXXaZVXXa_!!2207691322.jpg

by deskely
September 02, 2018

So what is your question?

by mikerogerswsm
September 02, 2018

If you want to build your own transistor, it is actually quite easy using two point contacts closely spaced on a piece of germanium. Two germanium diodes provide all the necessary parts. Then you have to 'burn in' the junctions with the right voltages and currents. The result is a quite respectable point contact germanium transistor.

https://www.youtube.com/watch?v=vmotkjMSKnI

by mikerogerswsm
September 02, 2018

Mullard OC50 and OC51 of 1952 were germanium point contact.

http://www.wylie.org.uk/technology/semics/Mullard/Mullard.htm

by mikerogerswsm
September 02, 2018

thank you for your sharing

by deskely
September 03, 2018

@mikerogerswsm Your professional answer is very useful to me, thank you very much

by deskely
September 09, 2018
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