Really OLD electronics [was Re: DIY Plastics...]

[KA4HJH]

>Also of interest is the casting books from Lindsay Publications 
>(http://www.lindsaybks.com). Lindsay is an odd place with 
>occasionally interesting items for experimenters... like a demented 
>Dover they reprint a lot of old electronics/electrical texts that 
>are out of copyright.

I have their reprint of the "Electro Importing Catalog 14" (1914). 
This was Hugo Gernsback's company (yeah, THAT Gernsback). Not an 
amplifier in sight. No "active" devices in the modern sense at all. 
Really fascinating reading (lots of pictures). The big surprise for 
me was the existence of electrolytic diodes for rectification and 
detection. Never even heard of that! Are spark gap oscillators 
thermally stable? (never mind the RFI turning up in conductors miles 
away...)


It's out of print--I got mine cheap from HV For Sale

http://home.earthlink.net/~teddp/home.htm

They still list it. Lots of other cool weird stuff.

Terry Bowman, KA4HJH
"The Mac Doctor"

ICQ: 45652354