14 Nov
2019
14 Nov
'19
2:08 p.m.
On 11/14/19 10:26 AM, dwight via cctalk wrote:
My point was that lumping them all together is like
lumping propeller plane, jet planes and rockets as all the same. They all use the
principles of throwing mass in the opposite direction of desired motion. They are still
quite different when you look just a little closer.
I have a clever way of using two junction FETs, N and P types, to make a nice negative
resistance device. Without much extra things, it can make a nice low power FM jammer. I
never did look to see how high a frequency it would go. No need to buy an expensive tunnel
diode.
Dwight
So, Shockley et al. didn't invent the IGBT either.
JFETs are enormously useful as constant-current devices as well as small
signal switches.
I've got a bunch of tunnel diodes; never found a practical use for them
for me.
--Chuck