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line frequency |
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line frequencyThe number of times each second that a wave or some repeatable set of signals is transmitted over a line. See horizontal scan frequency. line frequency [′līn ‚frē·kwən·sē] (electronics) The number of times per second that the scanning spot sweeps across the screen in a horizontal direction in a television system. Also known as horizontal frequency; horizontal line frequency. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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However, the DVMs used here do not maintain measurement aperture timing directly off the power line zero crossings, but by estimating a line frequency timed by intervals of its 50 MHz internal clock chip. For example, in a 35-ton, 7000kW line frequency coreless induction furnace, the lining throughput was 8000 tons of gray iron and only 2600 tons of ductile base iron. The challenge is in providing a stable control that will convert the line frequency to a lower frequency. |
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