Difference between revisions of "Lab 11 TF EIM"
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The Zener Diode | The Zener Diode | ||
| − | =I_{Zmax}= | + | =<math>I_{Zmax}</math>= |
#Construct the circuit below making sure the zener diode is oriented correctly. | #Construct the circuit below making sure the zener diode is oriented correctly. | ||
#Choose a resister <math>R</math> which will allow you to cover the range <math>I_Z \approx 1 mA</math> and <math>I_Z\approx \frac{1}{2} I_{Z max}</math> for the voltage range of your power supply. | #Choose a resister <math>R</math> which will allow you to cover the range <math>I_Z \approx 1 mA</math> and <math>I_Z\approx \frac{1}{2} I_{Z max}</math> for the voltage range of your power supply. | ||
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=Zener Voltage Regulator= | =Zener Voltage Regulator= | ||
| + | #Add a Zener diode to an unregulated power supply as shown below | ||
| + | #Use a value for <math>R</math> to have <math>I_L \approx 20</math> mA | ||
| + | #Measure <math>V_Z</math> for <math>I_L</math> = 1, 10, and 20 mA | ||
| + | #Tabulate your data and include the ripple. | ||
| + | |||
| + | |||
| + | =Questions= | ||
| + | |||
| + | #Derive <math>I_L= \frac{V_a-V_Z}{R}-I_Z</math> | ||
| + | #What happens if <math>R_L \rightarrow 0</math>. | ||
[[Forest_Electronic_Instrumentation_and_Measurement]] | [[Forest_Electronic_Instrumentation_and_Measurement]] | ||
Latest revision as of 02:37, 29 October 2010
The Zener Diode
- Construct the circuit below making sure the zener diode is oriented correctly.
- Choose a resister which will allow you to cover the range and for the voltage range of your power supply.
- use a a digital multimeter to measure for several values of .
Zener Voltage Regulator
- Add a Zener diode to an unregulated power supply as shown below
- Use a value for to have mA
- Measure for = 1, 10, and 20 mA
- Tabulate your data and include the ripple.
Questions
- Derive
- What happens if .