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Re: hand crank coil for demos
Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>
> I think you were using one of the large hand-cranked field generators. The
> hand magnetos for the EE-8 field telephone turn an armature between magnetic
> poles.
> It's kinda hard to see how you would get DC. They will put out close to 80-90
> Volts
> if you crank fast. The frequency is low enuff to be very painful.
>
> Cheers,
> Ralph Zekelman
Haven't tried one of the EE-8 magnetos (that design goes back to the
1930's or earlier), but as a kid used to get magnetos from "country
telephones" from the junk in the basement of the local phone company.
They used three very ordinary "U" shaped magnets and would light a 110V,
7-1/2 watt christmas tree bulb plenty bright enough to satisfy me.
Ed