On Dec 24, 10:28*am, brian whatcott wrote:
On 12/20/2010 7:11 PM, Lemon Tree wrote:

I have posted a Negative Dynamic Resistance circuit collection along
with some other things he
http://code.google.com/p/lemontree/downloads/list
I am no Alan Yates however maybe you will find some things of
interest.
Sean O'Connor

OK Hopping back on topic. * * *I recall that there are stiff materials -
like steel compared to aluminum,and stiff structures - like an aluminum
tube compared with a steel strip of the same weight per length.

In the same way, you have brought up negative resistance structures of
several designs, and I thought you were going to mention objects that
have a naturally -ve resistance region. And you did at one point.

I recall seeing on the net, some mention of an experimenter who scorched
some galvanized sheet and found that a point contract placed on it could
resonate a tuned circuit with its negative resistance.

Gotta love those folks.

Brian W

Hey OM:

I remember way back when we used to take blue steel double edge razor
blades and make a point contact negative resistance diode from them, a
good ground, and mother oats box wrapped with wire and a long wire
antenna, wow

73 OM
de n8zu