Recommended · for some experience
Make a Point Contact Transistor at home
Why people recommend it
Jeri Ellsworth's home-built transistor is admired as a practical demonstration of how point-contact devices work, including the forming step that makes them function.
Watch for: More involved than simply touching probes to germanium
In their words
Jeri Ellsworth electro-forms such doped regions around a phosphor broze wire by discharging a capacitor through a resistor.
Chris Stratton on electronics.stackexchange.com, Aug 2016. CC BY-SA.
