GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY GIPHOTOSTOCK / SCIENCE PHOTO LIBRARY
Different types of resistors are used in electronic circuits. Back: vitreous enamel wirewound high-power (225 W) resistor. Front, left to right: aluminum-cased wirewound high-power (50W) resistor, type MS power film resistor (12.5 W), carbon film resistor, metal film resistor, three carbon film resistors, precision metal film resistor, several tiny SMT (surface mount technology) resistors, variable resistor (potentiometer).
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