On 1/5/2006 at 7:17 AM Peter C. Wallace wrote:
Isnt that just a four layer diode? voltage mode
negative resistance?
Just build it in GaP and you'll have a solid state 'Neon' :-)
Hmmm, you may be onto something. Let's see, where did I put my bar of
gallium and tank of phosphine? :)
There's a guy who has a web site that describes building point-contact
negative resistance 2-terminal devices out of galvanized steel. He can get
them to oscillate.
Hard to beat if you need a really fast (but low
amplitude) edge
They make good broadband RF "sniffers" too.
Cheers,
Chuck