My eyes, my eyes!!

[proteanmix]

I'm digging my new blog. I foresee a blabby future.

Anyway while I was looking up what a superhet is I saw this:

and this:

eek!

This shit is scary! :horor:

 

[ygolo]

You're interested in RF circuits?

My RF professor mentioned that Armstrong's paper (which I believe the second set of figures is from) had "more integrals per sqaure inch than anything he had ever seen."

 

[ygolo]

Nevermind. I just made out that it said "Fessenden" or something.

Those figures are basic diff. amps, some with rather crude ways to set the common mode.

 

[ygolo]

Nevermind again. I think I need my eyes checked. Those elements that I thought were transistors, look like they are actually something else.

How old is that?

It almost looks like schematics drawn before they standardized symbols for circuit elements, or maybe I am just showing how much of n00b I am ad analog/RF.