A Diode Blast from the Past

[Phil]

What irritates me is that documents of the early 20th Century never ever seemed to bear a publication date. Even many books do not. On the plus side, I now know the difference between a 1N34 and a 1N34A. Nice find.

Phil M1GWZ


> On 22 Apr 2017, at 17:40, Richard O'Neill <richardoneill at earthlink.net> wrote:
> 
> http://www.vintageradio.com/history/SylvaniaDiodes.pdf
> 
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