A multi-triode with a 6-pin plastic base, extra lead wire extends from stem press. Tipped T-shaped envelope. Marked: "Loewe Radio / 3NF / [Fil] volts 4,0 / [Fil Current] 0,34 Amps / Anode [volt] 150".
Everyone knows and loves the first three normal forms. We go through the process of normalization to remove redundancies in our data structures. But the redundancies we remove have nothing to do with ...
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