Ron Hardin wrote:

starman wrote:
to think it will, so that's why I do it. There is one down side to the
external DC supply though. When the internal supply is used, the clock
is sync'd to the AC 60-HZ frequency which makes it more accurate than
with the DC supply.

Are you sure it's sync'd? My impression was that it worked off DC in either
case.

The clock circuit uses DC for the active componants but there is a
connection through a capacitor to the AC line to a pin on the clock chip
to sync' it.

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