On 5/15/19 9:37 PM, Michael Terrell wrote:
On Saturday, May 11, 2019 at 6:52:09 AM UTC-4, Fox's Mercantile wrote:
On 5/11/19 2:15 AM, Michael Terrell wrote:
On Friday, May 10, 2019 at 10:04:33 PM UTC-4, wrote:

Were transistors or semi-conductors also around back then? Incidentally, I know little about science, math and technology, so you know: I'm just curious.

Yes:

Diodes were the first semiconductor electronic devices. The discovery of crystals' rectifying abilities was made by German physicist Ferdinand Braun in 1874. The first semiconductor diodes, called cat's whisker diodes were made of crystals of minerals such as galena.


An accurate, but totally useless answer that you cut and pasted from:
http://www.idc-online.com/technical_references/pdfs/electronic_engineering/History_of_diode.pdf


No, I have never been to that site, but nice try, Skippy!

It came from he https://en.wikipedia.org/wiki/Metal_rectifier

So what, it was still word for word verbatim copy and past
Transistors weren't invented until 1947.

Generators were in use until the '60s, and mechanical regulators were
in use up to the 70's because prior to that they didn't have reliable
diodes and transistors.

So I repeat, in 1939, no.

Repeat it all you want. Bipolars were developed in the '40s, but Field Effect were much earlier. They were unable to manufacture them, until the metalurgy improved to an acceptable level to do more that create single FETs in the lab.

Blather all you want about lab curiosities.

His question, and the answer, were with regards to solid state devices
used in production on 1939 tractors.

There weren't any. So unless you can prove otherwise, go **** yourself.


--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com