[Milsurplus] Rebecca Eureka Dynamotor

[J. Forster]

It might be a Rebecca dyno, but for certain it is not a Eureka dyno.

-John

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> I have a dynamotor here that puts out 80v a.c. @ 2kHz , input is 28V d.c.
>  Initially due to surface corrosion, the shaft was frozen, but I have
> managed to clean the rust out & free the shaft by dissasembly. I have now
> powered up the dynamotor, & I find that with 4.3V d.c. on the field it
> outputs the 80V into a 60W incandescent globe ( A 5uF series capacitor is
> required on the AC output winding ). In the aircraft a carbon pile
> regulator is used to regulate the D.C. voltage on the field. As I don't
> have a carbon pile regulator, I'd like to use an op amp circuit to
> regulate the field.
> Anyone ever done this before? I imagine I'll have to rectify the 80V
> output & feed it into an op amp circuit with a reference voltage, the
> output voltage adjusting the field.
>                                Brad
>
>
>
>
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