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university:courses:electronics:electronics-lab-24m [14 Dec 2012 21:15] – [For further reading:] Doug Merceruniversity:courses:electronics:electronics-lab-24m [25 Jun 2020 22:07] – external edit
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-====== Activity 24M, MOS Multivibrators ======+====== Activity: MOS Multivibrators ======
  
 ===== Background: ===== ===== Background: =====
Line 13: Line 13:
  
 ===== Materials: ===== ===== Materials: =====
-Analog Discovery Lab hardware\\+ADALM2000 Active Learning Module\\
 Solder-less breadboard\\ Solder-less breadboard\\
 Jumper wires\\ Jumper wires\\
-2 - 470Ω Resistors\\ +2 - 470 Ω Resistors\\ 
-2 - 20KΩ Resistors\\ +2 - 20 KΩ Resistors\\ 
-2 - 10KΩ Resistors\\+2 - 10 KΩ Resistors\\
 2 - small signal NMOS transistors (ZVN2110A)\\ 2 - small signal NMOS transistors (ZVN2110A)\\
 1 - Red LED\\ 1 - Red LED\\
 1 - Green LED\\ 1 - Green LED\\
-2 - 47uF Capacitors\\+2 - 47 uF Capacitors
    
 ===== Directions: ===== ===== Directions: =====
  
-Construct the circuit as shown in figure 1 on your solder-less breadboard. The green boxes indicate connections to the Discovery hardware. Note: there is no input from the Discovery board just the power supply. The first inverting amplifier stage consists of M<sub>1</sub> with R<sub>1</sub> and the Red LED serving as the output load. The second inverting amplifier stage consists of M<sub>2</sub> with R<sub>2</sub> and the Green LED serving as the load. C<sub>1</sub> couples the output of the first stage at the drain of M<sub>1</sub> to the input of the second stage at the gate of M<sub>2</sub>. Similarly, C<sub>2</sub> couples the output of the second stage at the drain of M<sub>2</sub> back to the input of the first stage at the gate of M<sub>1</sub>.+Construct the circuit as shown in figure 1 on your solder-less breadboard. The green boxes indicate connections to the ADALM2000. Note: there is no input from the ADALM2000 board just the power supply. The first inverting amplifier stage consists of M<sub>1</sub> with R<sub>1</sub> and the Red LED serving as the output load. The second inverting amplifier stage consists of M<sub>2</sub> with R<sub>2</sub> and the Green LED serving as the load. C<sub>1</sub> couples the output of the first stage at the drain of M<sub>1</sub> to the input of the second stage at the gate of M<sub>2</sub>. Similarly, C<sub>2</sub> couples the output of the second stage at the drain of M<sub>2</sub> back to the input of the first stage at the gate of M<sub>1</sub>.
  
 {{ :university:courses:electronics:a24m_f1.png?500 |}} {{ :university:courses:electronics:a24m_f1.png?500 |}}
  
 <WRAP centeralign> Figure 1, Astable Multivibrator </WRAP> <WRAP centeralign> Figure 1, Astable Multivibrator </WRAP>
 +
 +{{ :university:courses:electronics:nmos_astablemultivibrator_hardwaresetup.png |}}
 +<WRAP centeralign> Figure 2, Astable Multivibrator breadboard circuit </WRAP>
  
 ===== Procedure: ===== ===== Procedure: =====
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 ===== Materials: ===== ===== Materials: =====
-Analog Discovery Lab hardware\\+ADALM2000 Active Learning Module\\
 Solder-less breadboard\\ Solder-less breadboard\\
 Jumper wires\\ Jumper wires\\
-2 - 470Ω Resistors\\ +2 - 470 Ω Resistors\\ 
-1 - 1KΩ Resistors\\ +1 - 1 KΩ Resistors\\ 
-1 - 20KΩ Resistor\\ +1 - 20 KΩ Resistor\\ 
-1 - 10KΩ Resistor\\ +1 - 10 KΩ Resistor\\ 
-1 - 47KΩ Resistor\\+1 - 47 KΩ Resistor\\
 1 - small signal diode (1N914)\\ 1 - small signal diode (1N914)\\
 2 - small signal NMOS transistors (ZVN2110A)\\ 2 - small signal NMOS transistors (ZVN2110A)\\
 1 - Red LED\\ 1 - Red LED\\
 1 - Green LED\\ 1 - Green LED\\
-1 - 47uF Capacitor\\+1 - 47 uF Capacitor
  
 ===== Directions: ===== ===== Directions: =====
-Construct the circuit as shown in figure 2 on your solder-less breadboard. The green boxes indicate connections to the Discovery hardware. Starting with the circuit from experiment 1, remove one of the 20K? resistors (old R<sub>3</sub>) and replace capacitor C<sub>1</sub> with a 1K? resistor (new R<sub>3</sub>). Add diode D<sub>1</sub> and resistor R<sub>5</sub> as shown to the base of M<sub>2</sub>. Be sure to replace C<sub>2</sub> with the original 47 uF capacitor.+Construct the circuit as shown in figure 4 on your solder-less breadboard. The green boxes indicate connections to the ADALM2000. Starting with the circuit from experiment 1, remove one of the 20K? resistors (old R<sub>3</sub>) and replace capacitor C<sub>1</sub> with a 1K? resistor (new R<sub>3</sub>). Add diode D<sub>1</sub> and resistor R<sub>5</sub> as shown to the base of M<sub>2</sub>. Be sure to replace C<sub>2</sub> with the original 47 uF capacitor.
  
 {{ :university:courses:electronics:a24m_f2.png?500 |}} {{ :university:courses:electronics:a24m_f2.png?500 |}}
  
-<WRAP centeralign> Figure 2, Monostable Multivibrator </WRAP>+<WRAP centeralign> Figure 4, Monostable Multivibrator </WRAP> 
 + 
 +{{ :university:courses:electronics:nmos_monostablemultivibrator_hardwaresetup.png |}} 
 + 
 +<WRAP centeralign> Figure 5, Monostable Multivibrator Breadboard Circuit</WRAP>
  
 ===== Procedure: ===== ===== Procedure: =====
Line 89: Line 96:
  
 ===== Materials: ===== ===== Materials: =====
-Analog Discovery Lab hardware\\+ADALM2000 Active Learning Module\\
 Solder-less breadboard\\ Solder-less breadboard\\
 Jumper wires\\ Jumper wires\\
-2 - 470Ω Resistors\\ +2 - 470 Ω Resistors\\ 
-2 - 1KΩ Resistors\\ +2 - 1 KΩ Resistors\\ 
-2 - 47KΩ Resistors\\+2 - 47 KΩ Resistors\\
 2 - small signal NMOS transistors (ZVN2110A)\\ 2 - small signal NMOS transistors (ZVN2110A)\\
 2 - small signal diodes (1N914)\\ 2 - small signal diodes (1N914)\\
 1 - Red LED\\ 1 - Red LED\\
-1 - Green LED\\+1 - Green LED
  
 ===== Directions: ===== ===== Directions: =====
  
-Construct the circuit as shown in figure 3 on your solder-less breadboard. The green boxes indicate connections to the Discovery hardware.+Construct the circuit as shown in figure 7 on your solder-less breadboard. The green boxes indicate connections to the ADALM2000.
  
 {{ :university:courses:electronics:a24m_f3.png?600 |}} {{ :university:courses:electronics:a24m_f3.png?600 |}}
  
-<WRAP centeralign> Figure 3, Bistable Multivibrator </WRAP>+<WRAP centeralign> Figure 7, Bistable Multivibrator </WRAP> 
  
 ===== Procedure: ===== ===== Procedure: =====
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 Add questions here: Add questions here:
 +
 +<WRAP round download>
 +**Resources:**
 +  * LTspice files: [[downgit>education_tools/tree/master/m2k/ltspice/nmos_multivib_ltspice | nmos_multivib_ltspice]]
 +</WRAP>
  
 ==== For further reading: ==== ==== For further reading: ====
university/courses/electronics/electronics-lab-24m.txt · Last modified: 03 Nov 2021 20:44 by Doug Mercer

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