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Archive: https://archive.today/7A1fz

From the post:

>Earlier this year [Skyhawkson] got ahold of a Apollo-era printed circuit board which he believes was used in a NASA test stand. He took high quality photos of both sides of the board and superimposed them atop each other. After digging into a few obsolete parts from the 1960s, he was able to trace out the connections. I ran across the project just after making schematics for the Supercon badge and petal matrix. Being on a roll, I decided to take [Skyhawkson]’s work as a starting point and create KiCad schematics. Hopefully we can figure out what this circuit board does along the way.

Archive: https://archive.today/7A1fz From the post: >>Earlier this year [Skyhawkson] got ahold of a Apollo-era printed circuit board which he believes was used in a NASA test stand. He took high quality photos of both sides of the board and superimposed them atop each other. After digging into a few obsolete parts from the 1960s, he was able to trace out the connections. I ran across the project just after making schematics for the Supercon badge and petal matrix. Being on a roll, I decided to take [Skyhawkson]’s work as a starting point and create KiCad schematics. Hopefully we can figure out what this circuit board does along the way.
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[–] • 1 pt

There's no reason why something like this wouldn't operate on 80VDC (or in this case -80VDC because "ground" was positive in germanium-land.) We tend to think of "transistor" devices in the consumer world as low-voltage battery things, but there's plenty of oddball voltages floating around in a late-model television set, operating across transistors.

[–] • 1 pt

80VDC?!? (files.catbox.moe)