[time-nuts] Switching transistors, current sources, nonidealties and noise

[Attila Kinali]

On Fri, 1 Jul 2016 12:28:44 -0400
Bob Camp <kb8tq at n1k.org> wrote:

> Real cascode circuits can be built with RF transistors. They also can be simulated.
> Simulating them with the “standard” models is a PIA. The issue is that the inductance
> of the package is not de-embedded from the test “socket” as carefully as it might be. 
> There is also the somewhat non-intuitive need to stick a low value resistor in the base.
> Done properly, they are very reproducible and reasonably insensitive to load. 

Thanks! That resistor in the base did the trick!
Am I right in the assumption that the resistor gives the transistor
some negative feedback and thus prevents it from oscillating?


			Attila Kinali

-- 
Malek's Law:
        Any simple idea will be worded in the most complicated way.