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We want to bias up a 3-stage 20 GHz distributed amplifier. It's tricky
and the chip costs $150, so we don't want to blow it up. A good drain
source might be a 50 ohm resistor from +16 volts, but clamped to +10
just in case.

This does it:

https://www.dropbox.com/s/mkk3q2q7pznopqj/317_Soft_1.jpg?raw=1

If K=1+R3/R2,

Reff = K*R1

Veff = K*1.25

and it clamps when the reg runs out of swing.


--  

John Larkin         Highland Technology, Inc

lunatic fringe electronics  


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