Some Might Find This Useful

Google let me down in finding this. I have had a couple different ones over the years. Of course this is not extremely accurate but it is quick.

I actually dug it up from an old filing cabinet I have had forever.

Actually, if anyone needs, I could scan it at a higher resolution. That copy is at the default on the HP CM1312nfi. I'm pretty sure it can do better.

I remember there being other charts that helped with quick design. One had the mu or a tube plotted against plate load resistance and gave open loop voltage gain, something lke that.

For some reason these things are no longer aropund. Of course we can all do 1 over 2 pi FC, but when it is right there it is even better.

Anyway, if anyone asks for a higher resolution copy I will scna it and upload it. At the moment though, it aeems like it should work fine just the way it is.

Once upon a time, engineers owned and used programmable scientific calculators. You could write your own software and store it on a magnetic card or in the calculator's battery-backed RAM.

HP still makes the latter sort, but they're designed by Australians, and lack the elegance of HP's American products.

the elegance of HP's American products. "

Don't tell me they don't have our highly advanced plannd obsolescence. Australians are animals anyway, in fact I am thinking of moving there but I have to figure out how to get my guns in.

Anyway,

Anyway nothing. Actually. lol

Be well, and if you ever have to design a crossover on the fly, remember the chart...

calculators. "

Once upon another time the had slide rules...

I still have my first Pickett. It's almost 50 years old. Students should be required to learn how to perform calculations with a slide rule, before using a calculator.

I was the first undergraduate at the University of Maryland to have an HP-35. I used to sit around of an evening, with other science and engineering students, completing the final calculations for their homework.