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Old 9th Mar 2018, 3:38 pm   #76
dominicbeesley
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Join Date: Nov 2004
Location: Hebden Bridge, West Yorkshire, UK.
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Default Re: Electric clocks running slow warning

Quote:
Originally Posted by paulsherwin View Post
Mains clock radios (and other mains equipment with clocks) traditionally used the mains frequency as a reference. I don't know if this is still the case or if they all use quartz now.

For some reason VCRs and other video recorders have never used synchronous clocks.
Probably because they were expensive enough and enough people wanted to play NTSC tapes in PAL land and vice versa that many were exported and run on transformers to make it worth the couple of bob extra for a quartz clock to avoid the bother of complaints?
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