Resistors and Color-Code
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Transcript of Resistors and Color-Code
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Resistors and Color-Code
Benchmark Companies Inc
PO Box 473768Aurora CO 80047
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Resistors
Symbol
( R ) Resistance determines how much current will flow through a component.
Resistance is the opposition to Current
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Resistors
Symbol
( R ) Resistance are used to control voltage and current levels. A very high resistance allows a small amount of current to flow.
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Resistors
Symbol
( R ) Resistance is synonymous with a pipe for water. The smaller the pipe the more resistance and less water flows. The larger the pipe the less resistance and more water can flow.
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Resistors
Symbol
( R ) Resistors A very low resistance allows a large amount of current to flow. Resistance is measured in ohms.
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Resistors
Symbol
The unit of resistance is the ohm, which is equal to one volt per ampere, or one volt-second per coulomb.
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Resistors
Symbol
The inverse of resistance, 1/R, is conductance (G), and its SI unit is the siemens (also unofficially called the mho).
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Resistors
Symbol
The voltage measured across a resistor at a given instant is strictly proportional to the current passing through the resistor at that instant.
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Resistors (types)
Low Power Resistors
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Resistors (types)
High Power Resistors
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Resistors (types)
Variable Low Power Resistors
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Resistors (types)
Variable High Power Resistors
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Resistors (types)
Cutaway view of various types of resistors
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ResistorsPower Rating of Resistors
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Resistors (Color Code)
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ResistorsExample 1: Determine the value and tolerance of the resistor
1st band: orange = 32nd band: orange = 33rd band: red = 2 (i.e. 102)4th band: gold = 5%
= 33 x 102 = 3300 Ohms= 3.3 kOhms
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Resistors (Alphanumeric label)
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ResistorsExample 1: Determine the value and tolerance of the resistor
Answer = 1.1 MOhms
1M1
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End of Presentation