Einheit der elektrischen Spannung
Diese Lampe benötigt ein Leuchtmittel von 220 Volt.
„Die Einrichtung besteht außerdem aus einem Transformator, der den Wechselstrom des städtischen Elektrizitätswerks von 6.600 Volt in Gleichstrom von 2 mal 230 Volt umwandeln kann.“
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