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No more high voltage PNP transistors?

Should I ever randomly come into a scientific glassblowing and vacuum kit... I've always wanted to make one.

It should be, as mentioned, painfully slow (while electron tubes have practical speeds -- transit times in the single digit nanoseconds -- ions will be *microseconds*!), and proportionally low in transconductance and perveance. Still, a few tens or hundreds of micromho (that's microsiemens for you youngsters) should be possible, at perhaps a mA or so, and 100V (plus a heater and 10-100V for the ion generator).

Keeping the drift region adequately pumped will also be a challenge. Likely, it will inevitably exhibit a hysteretic or thyratron characteristic at higher voltages/currents.

So, if you thought lateral PNP stank...

Tim

--
Seven Transistor Labs, LLC 
Electrical Engineering Consultation and Contract Design 
Website: http://seventransistorlabs.com
Reply to
Tim Williams
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You laugh, but storage rings find positrons more easily contained and cooled than electrons. Yes, vacuum tubes with antimatter are a real, useful, thing. Usually go by 'synchrotron'.

Reply to
whit3rd

Dirac originally envisaged positrons as "holes" in an electron sea.

It's difficult to imagine that they are anything but exactly equally as easy to contain and cool as electrons.

Colliding particles and anti-particles does have it's advantages. Equal mass and equal and opposite momentum. The fragments don't have any inherited momentum.

--
Bill Sloman, Sydney
Reply to
Bill Sloman

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