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Definition of "Rheostat" |
An adjustable resistor constructed so that its resistance may be changed without opening the circuit. / A two terminal variable resistor, or a three terminal variable resistor in which the wiper and one end terminal is used. However good design practice dictates that the unused terminal should be tied to the wiper contact. / The most common way to vary the resistance in a circuit is to use a rheostat. The word "rheostat" was coined about 1845 by Sir Charles Wheatstone, from the Greek word rheos meaning stream, and stat meaning regulating device which is a two-terminal variable resistor. For low-power applications a three-terminal potentiometer is often used, with one terminal unconnected or connected to the wiper. / Traffic flow security is the process of intercepting and examining messages in order to deduce information from patterns in communication. It can be performed even when the messages are encrypted and cannot be decrypted. / two terminal variable resistors used to control current. |
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