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Old 11th Dec 2022, 3:34 pm   #34
Maarten
Dekatron
 
Join Date: Dec 2007
Location: Haarlem, Netherlands
Posts: 4,185
Default Re: Combined power-pentode and double-diodes?

I discovered they had an ECH71 as well, so in the late 1940's or early 1950's Lorenz copied and possibly improved the early 1940's Philips line up and added at least a magic eye to it. Not a bad idea, if it weren't for noval valves being introduced around the same time.
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