variable resistor. Some carbon composition resistors can exhibit thermoelectric offsets as high as 400 µV/°C, whereas specially constructed resistors can reduce this number to 0.05 µV/°C. Applications of wirewound resistors are similar to those of composition resistors with the exception of the high frequency. If not enclosed, wirewound resistors can corrode. [7] With the strain gauge and a filter, amplifier, and analog/digital converter, the strain on an object can be measured. In electronic circuits, resistors play an important role to limit the current and provide only the required biasing to the vital active parts like the transistors and the ICs. , மேலும் திரிதடயங்களாகவுங்கூட (transistors) செயல்படச் செய்யலாம். Metal Electrode Leadless Face (MELF) resistors often use the same technology. They are used in applications such as dynamic braking and load banking for locomotives and trams, neutral grounding for industrial AC distribution, control loads for cranes and heavy equipment, load testing of generators and harmonic filtering for electric substations.[18]. Other components may be SMT (surface mount technology), while high power resistors may have one of their leads designed into the heat sink. It is important in small value resistors (100–0.0001 ohm) where lead resistance is significant or even comparable with respect to resistance standard value.[25]. The result is a reasonable tolerance (0.5%, 1%, or 2%) and a temperature coefficient that is generally between 50 and 100 ppm/K. For higher power wirewound resistors, either a ceramic outer case or an aluminum outer case on top of an insulating layer is used – if the outer case is ceramic, such resistors are sometimes described as "cement" resistors, though they do not actually contain any traditional cement. Practical resistors as discrete components can be composed of various compounds and forms. Thanks for using this online dictionary, we have been helping millions of people improve their use of the TAMIL language with its free online services. In a resistor the energy of the electrons that pass through the resistor are changed to heat and/or light. The resistance is determined by the ratio of the fill material (the powdered ceramic) to the carbon. Next three digits gives the resistance value. A related but more recent invention uses a Quantum Tunnelling Composite to sense mechanical stress. Tamil Translations of Resistor. Resistance is a measure of the opposition to the flow of current in a resistor. The resistance is again calculated using Ohm's Law as the measured voltage divided by the applied current. Higher concentrations of carbon, which is a good conductor, result in lower resistance. Such voltages appear in the junctions of the resistor leads with the circuit board and with the resistor body. Details / edit. Due to their high price, these resistors are no longer used in most applications. Resistors required to dissipate substantial amounts of power, particularly used in power supplies, power conversion circuits, and power amplifiers, are generally referred to as power resistors; this designation is loosely applied to resistors with power ratings of 1 watt or greater. A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. The completed resistor was painted for color-coding of its value. Definition of Resistor in the Online Tamil Dictionary. The word Resistor came from the property of resistance, which means to oppose current. A resistor network that is a combination of parallel and series connections can be broken up into smaller parts that are either one or the other. 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