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university:courses:electronics:electronics-lab-24m [23 Mar 2017 16:46]
Doug Mercer [Directions:]
university:courses:electronics:electronics-lab-24m [12 Jul 2019 14:16]
Pop Andreea
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-====== Activity ​24M, MOS Multivibrators ======+====== ActivityMOS Multivibrators ======
  
 ===== Background: ===== ===== Background: =====
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 ===== Directions: ===== ===== Directions: =====
  
-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 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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 ===== Directions: ===== ===== Directions: =====
-Construct the circuit as shown in figure ​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 ​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: =====
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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\\ 
-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 ​on your solder-less breadboard. The green boxes indicate connections to the Discovery hardware.+Construct the circuit as shown in figure ​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: [[ https://​minhaskamal.github.io/​DownGit/#/​home?​url=https://​github.com/​analogdevicesinc/​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: 25 Jun 2020 22:07 (external edit)