Latest revision as of 02:37, 29 October 2010

The Zener Diode

$I_{Zmax}$

Construct the circuit below making sure the zener diode is oriented correctly.
Choose a resister $R$ which will allow you to cover the range $I_Z \approx 1 mA$ and $I_Z\approx \frac{1}{2} I_{Z max}$ for the voltage range of your power supply.
use a a digital multimeter to measure $V_z$ for several values of $I_z$ .

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 The Zener Diode
-=I_{Zmax}=
+=<math>I_{Zmax}</math>=
 #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.
@@ Line 8: / Line 8: @@
 =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]]