Resistors and Color-Code
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Transcript of Resistors and Color-Code
Resistors and Color-Code
Benchmark Companies Inc
PO Box 473768Aurora CO 80047
Resistors
Symbol
( R ) Resistance determines how much current will flow through a component.
Resistance is the opposition to Current
Resistors
Symbol
( R ) Resistance are used to control voltage and current levels. A very high resistance allows a small amount of current to flow.
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.
Resistors
Symbol
( R ) Resistors A very low resistance allows a large amount of current to flow. Resistance is measured in ohms.
Resistors
Symbol
The unit of resistance is the ohm, which is equal to one volt per ampere, or one volt-second per coulomb.
Resistors
Symbol
The inverse of resistance, 1/R, is conductance (G), and its SI unit is the siemens (also unofficially called the mho).
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.
Resistors (types)
Low Power Resistors
Resistors (types)
High Power Resistors
Resistors (types)
Variable Low Power Resistors
Resistors (types)
Variable High Power Resistors
Resistors (types)
Cutaway view of various types of resistors
ResistorsPower Rating of Resistors
Resistors (Color Code)
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
Resistors (Alphanumeric label)
ResistorsExample 1: Determine the value and tolerance of the resistor
Answer = 1.1 MOhms
1M1
End of Presentation