Lecture 2 Use of Lab Instruments Review and Demonstrations

1
Lecture 2Use of Lab Instruments Review and
Demonstrations
2
Global Breadboard

• Layout and rules for use
• Function generator on board
• Power supply on board
• LED bank on board
• Switches on board
• Some have Serial IO connector

3
Power supply controls
4
Volt-Ohm-Meter controls
5
Volt-Ohm Meter

•  Example- Accuracy/Precision
• Example- Sensitivity (Ohms per volt)

6
Oscilloscope

• Internal block diagram
• Digital
• Accuracy Precision
• Other features

7
Troubleshooting and Problem solving techniques

• Start from known condition- KNOW THE ANSWER
• Add on parts and project outcome
• Conduct experiments with known outcomes
• When all else fails consider error in premise

8
Laboratory 1

• Demonstrate ability to use Breadboard, function
  generator, power supply, VOM, oscilloscope
• Measure input resistance of VOM and oscilloscope

9
Items to cover

• Power (viR PVI hv power line example)
• Volts/ohm (Meter sensitivity measure)
• More on Scope (AC-DC switch, digital)
• Bridge circuit equation
• Thevinin Equivalent

10
Resistive Circuits

• a.      Series/Parallel
• b.      Equivalent Resistance
• c.      Parallel equation
• d.      Big/Little approximation analysis
• e.      Example of VOM sensitivity
• f.        How to measure the output impedance
  of source
• g.      Pi T transform
• h. Resistor divider