Quote:
Originally Posted by paulsherwin
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.
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On the continent, some cheap imported LED clocks and clock radios still use mains sync. Philips switched to switch mode wall warts so those are probably crystall controlled nowadays.
Also, I'm pretty sure first generation VHS and betamax recorders actually used mains synced clocks. Philips VCR recorders certainly did, the earliest ones even with a motor driven timer clock.