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Definition of "Amperite Ballast Tube" |
Amperite ballast tube can maintain a constant current in a circuit over a very wide range of input voltages. It consists of a resistance wire with a positive temperature coefficient of resistance, hermetically sealed in a bulb containing hydrogen or helium gas. The resistance of this element will automatically increase or decrease in accordance with the change of temperature in the unit to maintain a very accurate current level. / Cyclic redundancy check is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents; on retrieval the calculation is repeated, and corrective action can be taken against presumed data corruption if the check values do not match. |
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