Difference between revisions of "CSC270 Lab 3 2016"

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(Transistor as Inverter)
(Light-Emitting Diodes (LED))
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* Press the '''Auto/Man''' button to put the meter into '''Automatic''' range measurements.
 
* Press the '''Auto/Man''' button to put the meter into '''Automatic''' range measurements.
 
* In your lab report, indicate the 3 voltages measured: V, V1, and V2.
 
* In your lab report, indicate the 3 voltages measured: V, V1, and V2.
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==Creating Your Own Input Switch==
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* Implement the circuit below, and connect its output to a Logic Indicator.  Use  a switch from one of the drawers on the North wall of the room.  There are 2 drawers, one labeled "Switches" and one labeled "Push Buttons".  Switches are better, although a push button would do as well.
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{|
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[[Image:inputSwitch.png|350px]]
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[[Image:SwitchAndWires.jpg|350px]]
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==Light-Emitting Diodes (LED)==
 
==Light-Emitting Diodes (LED)==
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* Fix the circuit by adding the appropriate gate.
 
* Fix the circuit by adding the appropriate gate.
 
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==Transistor as Inverter==
 
==Transistor as Inverter==
 
<br />
 
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Revision as of 16:53, 9 February 2016

--D. Thiebaut (talk) 14:43, 9 February 2016 (EST)


Electronics, Diodes, and Transistors


Part 1: Ohm's Law


  • For this part, you will implement the circuit below on the breadboard and you will measure V1 and V2 (see more information about the voltmeter below). Verify that V1 + V2 = 5 V and that V1/R1 = V2/R2.


CSC270ResistorsSeries.png


  • You may not be able to find a 4 KOhm resistor, but most likely a 3.9 KOhm one. (See chart below, taken from ecee.colorado.edu/~mcclurel.


ResistorChartByValue.png


Measuring Voltages with the Agilent 34401A Voltmeter


AgilentVoltmeter.png


  • Press the DC V button, and plug a black probe (rubber banana plug) into the LO connector (refer to diagram above), and a red probe (rubber banana plug) into the HI connector.
  • Press the Auto/Man button to put the meter into Automatic range measurements.
  • In your lab report, indicate the 3 voltages measured: V, V1, and V2.


Creating Your Own Input Switch


  • Implement the circuit below, and connect its output to a Logic Indicator. Use a switch from one of the drawers on the North wall of the room. There are 2 drawers, one labeled "Switches" and one labeled "Push Buttons". Switches are better, although a push button would do as well.

InputSwitch.png

SwitchAndWires.jpg



Light-Emitting Diodes (LED)


  • Implement the circuit below, which uses an LED. The diagram on the right indicates how to find the polarity of the LED.
  • Connect the input of the circuit (left line) to a Logic Switch. Connect one of the Logic Indicators on the Kit to the same Logic Switch.
  • Comment on your circuit. Is it working the way you want? Why or why not?


LEDIndicator.png

 

LEDPolarity.jpg


  • Fix the circuit by adding the appropriate gate.


Transistor as Inverter


  • Implement the circuit below, using a 2N2222 transistor. The pin labeling of the 2N2222 is given in the diagram, to the right.
  • Connect the inputs of the AND gate to a Logic Switch. Connect the output of the transistor (Collector) to a Logic Indicator.
  • Connect the output of the AND gate to a Logic Indicator.
  • Verify that the transistor inverses the signal it receives.


TransistorInverter.png

         

2N2222.png