[sdiy] Where to get Positron Triodes?

[Keith Daniel]

>> I'm having a hard time replicating 4000 series CMOS circuits in vacuum tubes
>> without a P-channel device. Does anyone know a source for Positron Triodes?

>Positrons is just the anti-particle of the electrons, and this is just an electron going backwards in time... so all you need is ordinary tubes you mirror in a time mirror and send them backwars in time...

Not quite. More practically, remove electrons from the filament and cathode, giving the anode the opportunity to give up electrons. Unfortunately grid bias will end up in the S plane.

The implementation is left as an exercise for the reader.  :-)

"Laws of Thermodynamics? We don't need any stinkin' Laws of Thermodynamics!!"

Sorry.      kwd...