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Re: Amplifier chain design - best practices

jim
 


The bother I have with most all those curves is that they start at Amperes ....Not mA's ...Been considering generating some on my own, just for fun and enjoyment ...(conductance curve probably)

Jim
On Sunday, September 23, 2018, 8:21:24 AM PDT, ajparent1/KB1GMX <kb1gmx@...> wrote:


Tim,


?

For information look at the Ids VS Vds for Vgs curves.? From that graph we can get a
load line that reflects input voltage.? Old tube hands likely the curves looking like?
many power tubes.? ?It is on the page upper right corner.? Do not let pulsed be a bother
as in some cases those curves represent power well above what the device can do
sustained.? Needless to say its hard to run the drain to zero volts and remain linear.?
It also indicates a Gm of about 1S? IE 1Vgs change causes a 1A Drain current change.

Allison
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