Correction:

5:31 - I messed up the visuals with this one here. Viewer and friend of the channel Andy wrote in to remind me that this wasn’t the Transistron but instead two Westector diodes back to back. This wasn’t European in origin - though pretty fascinating anyway. If you want to see the historical image of the Transistron (which costs money to license) go here https://www.bridgemanimages.com/en/no...

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