Subject: | Calibrating Engine RPM |
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From: | Dennis Lowe <DennisL@inovatec.co.uk> |
Date: | Fri, 26 Sep 1997 17:22:10 |
I believe mains frequency is only accurate over a 24hr period for clocks, timers etc, in the short term frequency is modified according to load on the grid. I seem to remember a figure of +-10% from many years ago. |
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