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Old 12th Oct 2018, 4:28 pm   #8
russell_w_b
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Location: Penrith, Cumbria, UK.
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Default Re: Vintage French Doorbell - Surely not 220V AC working!!!

The 'carrier fail' bells on the old ST&C HF transmitters at the long-demolished BBC Skelton 'B' (OSE9) station had movements similar to this wooden-based French one, and to telephone bells, although they worked on 50Hz and at about 50V as I recall, perhaps incorrectly. But they were a polarised movement and were quite sensitive.

Incidentally, a 59A bell movement with a d.c. resistance of 1000 Ohms (both bobbins in series) has an impedance of typically 1712 + j2022, or a Z of 2649 Ohms at 25Hz and 2502 + j3941 or a Z of 4668 Ohms at 50Hz; this particular bell movement being that of a Type 'F' field-telephone. So a bit of 230V mains won't harm yours, drawing - if the characteristics are similar - about 50mA. But make sure your bell-push is mains-rated!
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Last edited by russell_w_b; 12th Oct 2018 at 4:35 pm. Reason: different bell-movement sample characteristics quoted initially
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