Description
49TYD-500 AC Synchronous Motor 5 RPM AC 220/240V are available in small sizes for applications requiring precise timing such as timekeeping, (clocks) and tape players. Though battery-powered quartz regulated clocks are widely available, the AC line operated variety has better long term accuracy—over a period of months. This is due to power plant operators purposely maintaining the long term accuracy of the frequency of the AC distribution system. If it falls behind by a few cycles, they will make up the lost cycles of AC so that clocks lose no time.
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