[Chris Hornbeck]

On Thu, 12 Oct 2006 03:01:33 +0200, "Ruud Broens"
wrote:

...so Ia=k*Vak^3/2, with k some geometrically determined
: constant.
:

better formulated as: so, by induction, we know Ia is proportional to Vak^3/2,
the multiplier k being dependent on geometry and cathode emission

This is actually the approximation for a diode, but the
form for a triode is similar.

Please note that these are approximations. Put another way,
k is not constant, and not linear. It's the k part
that's interesting.

Thanks, as always,

Chris Hornbeck