Homebrew NMOS Transistor Step by Step - So Easy Even Jeri Can Do It

Jeri shows step by step how to make a transistor and at home with a kiln, Whink Rust and Stain remover, Emulsitone spin on dopant, ebay wafers and vinyl stickers.

Category:

Education

Tags:

• digikey
• mosfet
• semiconductors
• homebrew
• transistors
• electronics
• Jeri Ellsworth
• chips
• dopant
• Emulsitone
• DIY
• home
• chip
• lab
• test
• equipment

[Vatsek]

Did you also make a PMOS transistor?

[jeriellsworth]

@Vatsek I have.  It takes longer.

[supergenius1994]

where do you get the starting wafer?

[jeriellsworth]

@supergenius1994 Ebay and an other companies that offer prime wafers. Very easy to find.

[supergenius1994]

@jeriellsworth I'm sorry, but I can't find anything at all.

[jeriellsworth]

@supergenius1994 They will show up on ebay. Keep an eye open for silicon wafer. There are companies that sell directly too.

[ssapp72]

You make homebrewed transistors? IMHO, you are officially the coolest woman alive. :D

[jeriellsworth]

@ITGuru0111 Dust is not a huge problem when the transistors are as big your thumbnail.

[4u250ut]

I know this sound lame..But I think you are sexy because of your brain. :)

[christianjb2002]

I hope no one gets decalcified by doing this. That's a horrible way to die..

[douro20]

As I understand it, there are the most common type of power MOSFET, and the first to be widely manufactured. N-channel MOSFETs are workhorses in switching power supplies, motor drives, power inverters, or any electronic device where fast switching of high amounts of current is required. The only problem with MOSFETs is the fragile gate oxide, which can be destroyed by static electricity.

[EKOSMUNiDAD]

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...OOO... O ...OOO...

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[markd514]

@capricrow You are absolutely right, because I thought about it, and researche dit a little bit, and I could definitely do it at home, but why would I want to? It is kind of a waste of time. I can just buy one that works...lol

[markd514]

I am sorry, but there is NO way that you have self taught yourself to know all of this about electronics. This is on a physics level that requires many years of engineering. Sure, you can read about it, then "teach" people about it online. But there is no way that you pulled this out of your head and just wrote all this down.

[frac]

I envy you the feeling you must have had with your first success. I couldn't help but imagine the pioneers working their way past insurmountable problems to achieve the same thing without the benefit of prior knowledge. Amazing.

Would putting the wafer off-center make the spin coating a bit better? I got the impression that such a small wafer in the center like that wouldn't receive even and/or high centripetal (centrifugal? ...) forces. Hmm. The "real" machines center the wafer though...

[brianm734]

Sweet.. So in this design the connection of the substrate electrode to one of the outer P-doped regions determines which connection is the source, correct? Have you tried buying pre-surface doped P-type wafer and etching down through the dopant to create the gate channel, then grow the oxide gate insulator? Have you experimented with other P-type dopants like Boron?

Thanks for the excellent videos.

[davidsaunders0]

Thank you. I was beginning to think that this was a lost art. In the 70s and 80s this kind of thing was fairly common place amongst the smaller semiconductor makers and some hobbyist, those most of them were doing BJT devices, still making ICs with out the aid of a clean room. We need to learn this stuff again.