Negative Resistance

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jolyon Vater Cox by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>

I am wondering how a spark gap compares to a lambda diode.
Both are "negative resistance" devices;
with spark gap
increase in current coincides with decrease in voltage.


It is also possible to have an increase in voltage coincides with decrease 
in current-
is this also negative resistance? Is this not what happens with the lambda 
diode and also with the tunnel diode? Is this behavior the same or 
different to the spark gap?

Would it be possible to build a "power" lambda diode to function as a 
negative resistance device in a real Tesla coil?

Jolyon