Resistor Cube

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Resistor Cube

• Activity
• Lab Report

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RESISTOR CUBE PROJECT

• Job Sheet 1
• Step 1. Draw a cube that measures 2 inches on a
  side. Add the schematic symbol for a resistor to
  each leg of the cube (total 12 resistors). This
  drawing will be used throughout the project.
  Resistors must be numbered R1, R2, R3, etc.

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R10
R5
R6
R9
R1
R11
R2
R12
R4
R8
R7
R3
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RESISTOR CUBE PROJECT continued

• Step 2. From a bucket of mixed electronic
  parts, select 12 resistors (at least 4 different
  values).
• What value are the resistors in ohms?
• R1_______ R2 _______ R3_______ R4 _______
  R5 _______ R6 _______
• R7_______ R8 _______ R9_______ R10 _______
  R11 _______ R12 _______
• How can you tell their value?
• What tolerance are the resistors?
• How can you tell their tolerance? (hint, read
  chapter 4-2 in your text)

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RESISTOR CUBE PROJECT continued

• Step 3. Assemble the resistors into the cube you
  drew in step one and solder all leads of your
  cube. Ensure that your cube matches the drawing
  above. R1 on your cube matches the same location
  as R1 on your cube drawing and so on.

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RESISTOR CUBE continued

• Job Sheet 2
• Step 1. Refer to step 2 of Job sheet 1. Knowing
  the value of the resistors used to build your
  cube, what do you think the total resistance of
  your cube is?
• (note - we will be measuring this value in
  another step.)

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RESISTOR CUBE continued

• Job Sheet 2
• Step 2. Refer to step 1 of Job sheet 1. Looking
  at your drawing of the resistor cube, construct a
  one line, two-dimensional drawing of all the
  possible paths an electron can travel if it
  entered your cube at one corner and exited at the
  opposite diagonal corner. Be sure to use numbers
  on your resistors.
• What are drawings like these called?

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RESISTOR CUBE continued

• Job Sheet 3
• Step 1. Using a VOM or Digital Multi-meter,
  measure the total resistance of your cube. What
  is the value measured?
• Compare this value to the value you stated in
  step one of Job Sheet? Is there a difference?

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RESISTOR CUBE continued

• Job Sheet 3
• Step 2. Using the solder iron, disconnect one
  resistor from your cube and measure its value
  with a multi-meter.
• What is the measured value?
• How does this compare with the color code value?
  
• What is the tolerance value of your resistor?
• What is the most and least your resistor should
  measure?
• Does your measured value fall within these
  specifications?
• Step 3. Reconnect the resistor from step 2 and
  submit for grading.

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