Aviation Mechanic - General, Airframe, and Powerplant › I. General › Task A. Fundamentals of Electricity and Electronics

AM.I.A.K20

Knowledge

Resistor types and color coding.

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Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - General p. 12-25
Chapter 12: Fundamentals of Electricity & Electronics › Color Code › Wire-Wound
percent ohms. Figure 12-49. Resistor color code. Wire-Wound Wire-wound resistors typically control large amounts of current and have high power ratings. Resistors of this type are constructed by winding a resistance wire around an insulating rod usually…
Aviation Maintenance Technician Handbook - General p. 12-24
Chapter 12: Fundamentals of Electricity & Electronics › Color Code
body or base color of the resistor has nothing to do with the color code, and in no way indicates a resistance value. To prevent confusion, this body is never the same color as any of the bands indicating resistance ... value. Figure 12-45. Unconnected crossover wires. Figure 12-46. Connected wires. Figure 12-47. Common wire types…
Aviation Maintenance Technician Handbook - General p. 12-26
Chapter 12: Fundamentals of Electricity & Electronics › Rheostat
that it is connected to is in operation. There are two basic types of manual adjustors: the rheostat and the potentiometer. Rheostat A rheostat is a variable resistor used to vary the amount of current flowing in a circuit. [Figure ... current in the circuit increases. Figure 12-50. End-to-center band marking. Figure 12-51. Resistor color code example. Figure 12-52. Resistor color code example. Figure 12-53. Resistor with two percent tolerance. Figure 12-54. Resistor with…