[Healeys] USA Time

Gil Rockwell gilrockwell at comcast.net
Wed Oct 31 17:39:22 MST 2007


Actually it does matter for digital clocks produced in the early years of
digital clock technology.  Digital clocks today use a crystal for the time
base, but the early ones used the frequency of the AC line for its time
base.  For a clock built in the US, it used the 60 hertz frequency to be
divided by the digital circuits in the clock chip.  Trying to use it in
Australia or Europe where the power is 50 hertz the clock may run, but it
will always be slow by about 17 percent.

Gil
61 BT7

-----Original Message-----
From: healeys-bounces+gilrockwell=comcast.net at autox.team.net
[mailto:healeys-bounces+gilrockwell=comcast.net at autox.team.net] On Behalf Of
Alan Seigrist
Sent: Wednesday, October 31, 2007 9:40 AM
To: Jack Feldman
Cc: healeys at autox.team.net
Subject: Re: [Healeys] USA Time

Jack -

It's a digital clock.  Cycles don't matter!

Alan

On 10/31/07, Jack Feldman <qualitas.jack at gmail.com> wrote:
> Years ago I remember being told that England used 50 cycle current. If
> Australia uses the same than a clock that requires 60 cycle won't work.
>
> Jack
> _______________________________________________
> healey.nut at gmail.com
>
> Healeys at autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>


-- 
Alan

'52 A90
'53 BN1
'64 BJ8


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