[sdiy] Vacuum tube opamp datasheets

[John Loffink]

I appreciate the historical computing data.  It would help if these
scans were about 2X the resolution so they were easier to read.

Also, note that pg26 links to the pg25.gif.

John Loffink
jloffink at austin.rr.com 

> -----Original Message-----
> From: owner-synth-diy at dropmix.xs4all.nl [mailto:owner-synth-
> diy at dropmix.xs4all.nl] On Behalf Of epeasant at telusplanet.net
> Sent: Thursday, January 02, 2003 10:19 PM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] Vacuum tube opamp datasheets
> 
> Happy New Year, everyone!
> 
> For those tube heads who are interested, as well as others
> who might want to learn a bit about early op amps (before
> transistors), I have posted a copy of the George A.
> Philbrick Researches GAP/R K2 series op amp applications
> manual. See:
> 
> http://www.angelfire.com/electronic/epeasant/circuits/circui
> ts.html
> 
> It's under Data Sheets, about half way down the page.
> 
> It's 27 pages, covering a wide range of computing
> functions, including an adjustable lag circuit that looks
> very similar to the basic portamento circuit used by many
> Synth DIYers. I'd be very interested to hear other's
> comments on the material presented here (first published
> 1956).
> 
> Take care,
> Doug
> ______________________
> The Electronic Peasant
> 
> www.electronicpeasant.com