[time-nuts] Mains Frequency Monitor with the PIC 16F1619 (Daniel Watson)

Thomas D. Erb tde at electrictime.com
Mon Jun 20 11:08:28 EDT 2016

 Line frequency in the USA  is actually very accurate over the long term - not with respect to atomic clocks - but the power companies do correct the line frequency.

In the suburb of Boston where we are located - you never have to correct an electrical clock between the daylight saving time changes. This of course assumes you haven't lost power - due to major snow storms etc....

If anyone is interested - this is a 1920's version of a line frequency monitor used in a power station - with a pendulum clock as the time standard.


Thomas D. Erb
tde at electrictime.com<mailto:tde at electrictime.com> /
Electric Time Company, Inc.
Office: 508-359-4396 x 117 / Fax: 508-359-4482
97 West Street Medfield, MA 02052 USA

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