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Originally Posted by jjl
The 2 off ECH21 plus EBL21 or U equivalent circuit was a war-time Philips Eindhoven development intended to save cost; more info here. Tesla and Philips seemed to have some sort of commercial relationship at the time, hence Tesla's use of the circuit during WWII and continuing into the late '50s. |
I don't think Tesla and Philips had a commercial relationship at that time, but one of the more important factories that were nationalised and made part of the Tesla conglomerate, was the Philips radio factory in Prague.