"Reg Edwards" wrote in message
...
Richard Harrison wrote:
Negative resistance is a gain instead of a loss.

Therefore, doesn't an amplifier have negative resistance?
--
73, Cecil

==========================

Cecil, for once, you are not far from the truth. The problem lies in
producing the equivalent circuit diagram.
----
Reg.


Hey guys,
Jog my memory; but don't some power tubes have a high value negative plate
resistance under some bias conditions and will oscillate under no load
conditions if external losses are low.
The 4CX250 family comes to mind.

Tam/WB2TT