Unknown amplifier with Philips F443 pentode (Gezocht)

door ejrietbergen , Schiermonnikoog, 17.10.2023, 09:56 (202 dagen geleden) @ Maurice

Looks like a total DC current amplifier with al those big resistors and ballast lamps.
Would be great if you get thing going.

It is very likely a DC-supplied amplifier: up until 1945 the Danish grid was 220 VDC fed by many local powerstations.

Kind regards, EJ

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