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

2016-06-20 Thread Van Horn, David
Amusing story: Back in high school, Ewa Beach Hawaii, I used to notice that the second hand on the clocks would sometimes slow significantly. This turned out to be caused by the man who would later become my father in law. He ran the steel mill, melting old cars into rebar, which was

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

2016-06-20 Thread Hal Murray
t...@electrictime.com said: > 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 I agree with the spirit of your comment, but

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

2016-06-20 Thread Thomas D. Erb
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