Re: 25 Hz Power |
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William Warren (william_warren_nonoise@speakeasy.net) Fri, 10 Mar 2006 22:11:26 -0500
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hancock4@bbs.cpcn.com wrote: [snip]
> I wonder how the telephone company rectified AC power for its DC
The only motor-generator sets in use when I joined the phone company
Some CO's also had independent alternators in case of power failure:
> Over the years the technology of power supplies dramatically improved.
> I don't know if true, but someone told me that in Europe that didn't
I don't know why, but Europe uses 50 Hz AC power, instead of the 60Hz we
<nitpick>
Despite the different frequency, both US/Canadian and European homes
The difference is that European homes receive a 220-volt, single-phase
</nitpick>
William Warren |
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