9 Jul
2007
9 Jul
'07
3:54 p.m.
You're
making me feel very old. When I was a kid, I used to make a
neon
bulb blink using one resistor and one capacitor.
Relaxation oscillators are fun. I like the UJT version as well,
though UJTs are getting harder to find than they once were. I have
two or three 2N2646 UJTs left.