26 Oct
2025
26 Oct
'25
3:52 p.m.
On 2025-10-26 3:15 p.m., Paul Koning wrote:
In some cases you could get a negative resistance device.
https://hackaday.com/2024/03/05/making-a-crystodyne-radio-with-zinc-oxide-a…
On Oct 25, 2025, at 5:47 PM, ben via cctalk
<cctalk(a)classiccmp.org> wrote:
On 2025-10-25 2:39 p.m., Paul Koning via cctalk wrote:
I wonder if you could make a point contact transistor out of galena.
paul
I remember at one time IBM was building a
synchrotron so they could generate coherent X-rays for lithography. That never went
anywhere as far as I know. ASML doesn't do that, they use exotic laser technology
instead.
paul
Low tech is more
fun.https://hackaday.com/2010/05/13/transistor-fabrication-so-simple-a-chil…