Electronics Technology

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Electronics Technology

• The
• FAST
• Track

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Resistor Color Codes

• Black 0 Black 0 Brown 1
• Brown 1 Brown 1 Red 2
• Red 2 Red 2 Gold 5
• Orange 3 Orange 3 Silver 10
• Yellow 4 Yellow 4 None 20
• Green 5 Green 5 Tolerance
• Blue 6 Blue 6
• Violet 7 Violet 7
• Gray 8 of Zeros
• White 9 Gold x .1 (Multiplier)
• Bands 1 2 Gray x .01 (Multiplier)

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Metric Units

• Giga G 9 milli m -3
• Mega M 6 micro u -6
• Kilo k 3 nano n -9
• Units _ 0 pico p -12

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Metric Math

• To add -- convert to same label
• To subtract -- convert to same label
• To multiply -- add exponents
• To divide -- subtract exponents
• Examples
• milli milli milli Giga giga giga
• M x u units m / n M

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Resistors Oppose current

• Series R1R2R3RRt
• Parallel __________1________
• _1_ _1_ _1_
  _1_ Rt
• R1 R2 R3
  R
• Series-Parallel 1). Solve series resistors in
  parallel branches before solving parallel.
• 2). Solve parallel branches before solving
  series.

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Coils Inductors Oppose current changes

• Series L1L2L3LLt
• Parallel __________1________
• _1_ _1_ _1_
  _1_ Lt
• L1 L2 L3 L
• Series-Parallel 1). Solve series inductors in
  parallel branches before solving parallel.
• 2). Solve parallel branches before solving
  series.

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Capacitors Oppose voltage changes

• Parallel C1C2C3CCt
• Series __________1________
• _1_ _1_ _1_
  _1_ Ct
• C1 C2 C3
  C
• Series-Parallel 1). Solve series capacitors in
  parallel branches before solving parallel.
• 2). Solve parallel branches before solving
  series.

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Ohms Law

• Current times resistance equals voltage
• I x R E or I x R V or I x R EMF
• E/R I or V/R I or EMF/R I
• E/I R or V/I R or EMF/I R

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