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Old 12th Oct 2018, 10:45 pm   #16
broadgage
Nonode
 
Join Date: Jan 2010
Location: North Somerset, UK.
Posts: 2,129
Default Re: Vintage French Doorbell - Surely not 220V AC working!!!

I suspect that this is for 220 volt AC supply, with a DC resistance of 1,000 ohms, a total AC impedance of about 2,200 ohms seems reasonable.
That would mean an input current of about 100ma, and a resistive dissipation of some watts, which would be fine for short term use.

Alternatively it might be for 127 volt mains, of which there was once a lot in France.

Possibly for some industrial or railway use rather than a domestic door bell.
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