ORIGINAL MESSAGE: (may be snipped)
n 1/20/2014 12:35 AM, John Lyles wrote:
A little tube history here:
RCA designed and manufactured beam power tetrodes such as the 6L6,
807, and 829B to increase power output, allowing the plate voltage
swing to go lower without a large increase in screen current during
the minimum.
REPLY:
I was a fan of RCA engineering even back in the 50's when I was a kid
just getting into electronics. Not only tube design but TV, radio and
electronics in general. I remember their SyncroGuide system for
improving horizontal sync in TVs. They took a plain old sine wave of the
correct sync frequency, turned it into a spike and used that as a much
sharper trigger for the horizontal sweep. Outperformed anything on the
market, but now it's just a footnote to history. I wonder how many other
brilliant inventions of the time will be forgotten? I hope somebody is
keeping track. :-)
Those guys way ahead of their time. I never met any of them but I do
admire them from afar.
Now the old RCA is just a fading memory. Wish I could have worked there.
Sigh.
73, Bill W6WRT
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|