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It's lightweight because it has no transformer! At least none that I can see. Be very carefull with that beast if in fact it does not have a transformer. Those old things rectified and multiplied the AC line directly. What are the tubes in it? My guess is the filaments may be in series and fed from the 120 Vac line unless it has a small filament transformer I can't see.

[QUOTE="Captain Kilowatt, post: 325923, member: 39"] It's lightweight because it has no transformer! At least none that I can see. Be very carefull with that beast if in fact it does not have a transformer. Those old things rectified and multiplied the AC line directly. What are the tubes in it? My guess is the filaments may be in series and fed from the 120 Vac line unless it has a small filament transformer I can't see. [/QUOTE]

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