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Passive Components * Introduction: Passive Components * Resistors ## Resistor Specifications ## Examples: Resistor Specifications ##

Preferred Values: Resistors ## Resistor Colour Code ## Examples: Resistor Colour Code Test ## BS1852 Resistor Coding ## Examples: BS1852 Resistor Coding ## Measuring Resistance ## Resistor Symbols ## Resistor Construction ## Resistors in Series ## Worksheet: Resistors in Series ## Resistors in Parallel ## Worksheet: Resistors in Parallel ## Resistance and Temperature ## Examples: Resistance and Temperature ## Positive Temperature Coefficient ## Negative Temperature Coefficient ## Thermistors ## Light Dependent Resistors * Capacitors * Inductors * Transformers * Batteries, Fuses, Lamps and Switches * Assessment: Passive Components

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Preferred Values: Resistors

<^< Examples: Resistor Specifications | Course Index | Resistor Colour Code >^>(:nl:)

Resistors are available in several series of fixed decade values, the number of values provided with each series being governed by the tolerance involved. In order to cover the full range of resistance values using resistors having a ±20% tolerance, six basic values, known as the E6 series, are provided. More values are available in the E12 series which offers a tolerance of ±10%. The E24 series for resistors of ±5% tolerance provides no less than 24 basic values. In all three cases, decade multiples of the basic series are available (i.e., x1, x10, x100, x1k, x10k, x100k and x1M).

E6E12E24
1.01.01.0
  1.1
 1.21.2
  1.3
1.51.51.5
  1.6
 1.81.8
  2.0
2.22.22.2
  2.4
 2.72.7
  3.0
3.33.33.3
  3.6
 3.93.9
  4.3
4.74.74.7
  5.1
 5.65.6
  6.2
6.86.86.8
  7.5
 8.28.2
  9.1

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