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university:courses:electronics:electronics-lab-26 [23 Mar 2017 15:47] – [Measurements:] Doug Merceruniversity:courses:electronics:electronics-lab-26 [05 Nov 2021 15:32] (current) – [Activity: Zener Diode Regulator] Doug Mercer
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-====== Activity: Zener Diode Regulator ======+====== Activity: Zener Diode Regulator - ADALM2000======
  
 ===== Objectives: ===== ===== Objectives: =====
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 ===== Directions: ===== ===== Directions: =====
  
-Build the circuit shown in figure 1 on your solder-less breadboard using the 1N4735 6.1 volt zener diode. Use AWG1 and the -5V Vn user supply to establish the DC supply V<sub>IN</sub>. Use various fixed and variable resistors for R<sub>L</sub>.+Build the circuit shown in figure 1 on your solder-less breadboard using the 1N4735 6.1 volt zener diode. Use AWG1 (5V constant) and the -5V Vn user supply to establish the DC supply V<sub>IN</sub>. Use various fixed and variable resistors for R<sub>L</sub>.
  
 {{ :university:courses:electronics:a26_f1.png?600 |}} {{ :university:courses:electronics:a26_f1.png?600 |}}
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 <WRAP centeralign> Figure 1 Zener Diode regulator </WRAP> <WRAP centeralign> Figure 1 Zener Diode regulator </WRAP>
  
-===== Measurements: =====+Hardware Setup: 
 + 
 +{{ :university:courses:electronics:zener_reg-bb.png |}} 
 + 
 +<WRAP centeralign> Figure 2 Zener Diode regulator Breadboard Circuit </WRAP> 
 + 
 +===== Procedure: =====
  
 1. Monitor and report the load voltage V<sub>L</sub> by using the Scopy Voltmeter instrument to measure V<sub>L</sub> for R<sub>L</sub> equal to:\\ 1. Monitor and report the load voltage V<sub>L</sub> by using the Scopy Voltmeter instrument to measure V<sub>L</sub> for R<sub>L</sub> equal to:\\
   * Open circuit\\   * Open circuit\\
 +{{ :university:courses:electronics:zener_reg-wav1.png |}}
 +<WRAP centeralign> Figure 3 R<sub>L</sub> = Open Circuit Zener Diode regulator waveform </WRAP>
   * 10 kΩ\\   * 10 kΩ\\
 +{{ :university:courses:electronics:zener_reg-wav2.png |}}
 +<WRAP centeralign> Figure 4 R<sub>L</sub> = 10kΩ Zener Diode regulator waveform </WRAP>
   * 1 kΩ\\   * 1 kΩ\\
 +{{ :university:courses:electronics:zener_reg-wav3.png |}}
 +<WRAP centeralign> Figure 5 R<sub>L</sub> = 1kΩ Zener Diode regulator waveform </WRAP>
   * 100 Ω\\   * 100 Ω\\
 +{{ :university:courses:electronics:zener_reg-wav4.png |}}
 +<WRAP centeralign> Figure 6 R<sub>L</sub> = 100Ω Zener Diode regulator waveform </WRAP>
 +
 2. Replace the load R<sub>L</sub> with a 5KΩ potentiometer, and adjust the potentiometer to determine the minimum value of R<sub>L</sub> for which V<sub>L</sub> remains within 10% of the zener voltage V<sub>Z</sub>. Measure and report the resistance you set the potentiometer to. How does this resistance relate to the value of R<sub>S</sub>? 2. Replace the load R<sub>L</sub> with a 5KΩ potentiometer, and adjust the potentiometer to determine the minimum value of R<sub>L</sub> for which V<sub>L</sub> remains within 10% of the zener voltage V<sub>Z</sub>. Measure and report the resistance you set the potentiometer to. How does this resistance relate to the value of R<sub>S</sub>?
  
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 Add questions here: Add questions here:
  
 +<WRAP round download>
 +** Resources: **
 +  * Fritzing files: [[downgit>education_tools/tree/master/m2k/fritzing/zener_reg_bb | zener_reg_bb]]
 +  * LTSpice files: [[downgit>education_tools/tree/master/m2k/ltspice/zener_reg_ltspice | zener_reg_ltspice]]
 +</WRAP>
 ===== For Further Reading ===== ===== For Further Reading =====
  
university/courses/electronics/electronics-lab-26.1490280421.txt.gz · Last modified: 23 Mar 2017 15:47 by Doug Mercer

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