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Lab 5

Lab #5

ZENER DIODE

1. OBJECTIVES:

To become familiar with the operation, characteristics, and the application of Zener diodes.

2. COMPONENTS USED AND SPECIFICATION:

– 1N4733A, 5.1 V Zener diode, Spec.’s given on last page

– 470 Ω and calculated resistors

– DC power supply, for 0-10 VDC

– Multimeter for voltage and current readings

– Oscilloscope with probes

– Computer with Multisim software for computer simulations

– Wire, alligator clips, and a breadboard

3. VOLTAGE REGULATION: 

lab 5_1

3.1    Assemble the circuit shown above.  Calculate the value of R, for IZ=38.2mA (still consider the current through the load).  Without RL, vary Vin from 0 to 10V.  Measure Vzener and IZ.  Draw a graph Vzener vs. IZ.  What is rz?  Does this match the manufacturer’s specifications?  Software simulation only.

3.2    Set Vin = 10V.  Add RL =470Ω.  Perform hardware and software simulation.

3.3    What happens when Vin  is changed from 10-15V.  Perform the software simulation only.  Explain the results.

 Tabulate the values of IZ, Iload, and Vin.

lab 5_2

3.4 Finally, what would R be if Vin = 10VDC ± 0.1VDC, IZmin = 1.0mA, and ILmax = 25mA?

lab 5_3

Lab report is individual and Analysis part should be on your own words.

The Lab report must include all lab procedures, all the observations from hardware and software simulations, and a detailed analysis.

 

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