http://www.bryantlabs.net/VBBTheory.htm

Here's the more direct link to the schematic page.  I tried the links from
the block diagram in IE version 6, SBC Yahoo Browser, and Netscape 7, and
they all work.

The drawings are in Adobe Acrobat pdf format, so you will need to have the
reader installed.

I added a caption above the block diagram to clarify the situation, I hope.

Let me know if there are any problems with other browsers, etc.  I don't
know what affect a pop-up blocker might have.

Thanks,

    Keith

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