Science Technology

Jeri’s at it again, this time, cracking open some 1N34 diodes to harvest the germanium to build a crude transistor. Before that, she does a really nice job sketching out the basic physics behind semi-conductor operation. And she does get her point-contact transistor to work. Crude, but it works! Kudos, as always, Jeri!

Make a Point Contact Transistor at Home

More:
Lost Knowledge: Homemade electronic components

Tagged

Gareth Branwyn is a freelance writer and the former Editorial Director of Maker Media. He is the author or editor of over a dozen books on technology, DIY, and geek culture. He is currently a contributor to Boing Boing, Wink Books, and Wink Fun. And he has a new best-of writing collection and “lazy man’s memoir,” called Borg Like Me.

View more articles by Gareth Branwyn