[time-nuts] time-nuts Fast risetime pulse generator

[Mike Magin]

> After paying only limited attention to this topic, I suddenly have a 
> need for a pulse generator that has <150 ps risetime and a pulse width 
> of at least 2 ns. 100mv amplitude or more is fine. I've looked at the 
> classic Jim Williams avalanche generator, but I don't want to have to 
> deal with the (relatively) high voltage source needed.

A classic thing in this area, made of 1960s unobtainium:
http://w140.com/tekwiki/wiki/284

I have one and it works nicely.  However, probably not useful to
try to reproduce the design, nor is it exactly low voltage (40 volts)
supply to the pulse generator.
Also, I wish it was externally triggerable.  It seems to be mostly a 
tool for testing out scopes. :)

Mike