Penjelasan tentang Modulasi PWM dan Modulasi FM Menggunakan Proteus

TE4A_Muhammad Khabibur Rohman

5 Feb 202209:37

Summary

TLDRThis video script discusses two types of modulation: Pulse Width Modulation (PWM) and Frequency Modulation (FM). The presenter uses Proteus software to simulate both modulations, explaining the process and components involved. PWM involves varying the pulse width while keeping the frequency constant, demonstrated using a diode, IC555, and other components. FM modulation alters the frequency of the carrier signal based on the information signal's voltage changes. The script provides a clear comparison between the two modulation techniques, highlighting the differences in frequency and pulse width.

Takeaways

😀 The speaker is addressing an audience about facing challenges from the T2Pro clan in the field of telecommunication studies at Politeknik Negeri Semarang in 2020.
🔧 The speaker explains two types of modulation: Pulse Width Modulation (PWM) and Frequency Modulation (FM).
💻 The speaker uses Proteus software to simulate both PWM and FM modulations.
📈 The script describes the process of setting up a circuit for PWM modulation using components like a diode, IC555, capacitors, a potentiometer, and resistors.
📊 The speaker demonstrates how to adjust the pulse width in PWM by using a potentiometer within the circuit.
🎛️ The script mentions setting up an oscilloscope to view the output signal clearly, which is essential for understanding the modulation process.
📡 The speaker then moves on to explain and simulate FM modulation, detailing the components and their arrangement.
🌊 The output signal in FM modulation is dependent on the carrier signal's frequency changes, which are influenced by the information signal.
🔗 The script highlights the difference between PWM and FM: in PWM, the frequency and period remain constant while the pulse width varies; in FM, both frequency and period change.
📝 The speaker concludes by summarizing the key features of PWM and FM, emphasizing the importance of understanding these modulation techniques.
🙏 The speaker ends with a call to action for likes, comments, shares, and expresses gratitude for watching the video.

Q & A

What are the two types of modulation discussed in the script?
-The two types of modulation discussed are Pulse Width Modulation (PWM) and Frequency Modulation (FM).
Which application is used to simulate the modulations mentioned in the script?
-The application used to simulate the modulations is Proteus.
What components are used in the PWM circuit simulation as described in the script?
-The components used in the PWM circuit simulation include a diode (1N4007), a 555 timer IC, capacitors, a potentiometer, resistors, and a power supply.
How does the width of the pulse in PWM change in the simulation?
-The width of the pulse in PWM can be adjusted by changing the setting of the potentiometer in the circuit.
What is the difference between the output signal of PWM and FM as depicted in the script?
-In PWM, the frequency and amplitude remain constant while the pulse width varies. In FM, both the frequency and the period of the carrier signal change according to the information signal.
What is the role of the potentiometer in the PWM circuit as described in the script?
-The potentiometer is used to control the pulse width in the PWM circuit, thereby modulating the signal.
How is the frequency of the carrier signal affected by the information signal in FM, according to the script?
-In FM, the frequency of the carrier signal varies in accordance with the changes in the information signal's voltage.
What is the significance of the capacitor and the inductor in the FM modulation circuit as mentioned in the script?
-The capacitor and inductor in the FM modulation circuit are used to generate the carrier signal, which is then modulated by the information signal.
What is the purpose of the oscilloscope settings in the simulation as described in the script?
-The oscilloscope settings are adjusted to clearly display the waveform of the output signals, allowing for the visualization of the modulated signals.
How does the script differentiate between the two modulation techniques in terms of their characteristics?
-The script differentiates PWM and FM by explaining that in PWM, the pulse width changes while the frequency remains constant, whereas in FM, both the frequency and the period of the carrier signal change.
What is the final message from the presenter in the script regarding the video content?
-The presenter asks viewers to like, comment, and share the video if they find it useful, and apologizes for any shortcomings.

Outlines

00:00

😎 Introduction to PWM and FM Modulation

The speaker begins by greeting the audience and introducing the topic of modulation techniques, specifically Pulse Width Modulation (PWM) and Frequency Modulation (FM). They mention facing a challenge from the T2Pro clan in the field of telecommunication studies at the Semarang State Polytechnic in 2020. The speaker then explains their intention to use the Proteus application to simulate both PWM and FM modulations. They describe the components used in the simulation, including a diode, transistor, IC555, capacitors, potentiometers, resistors, and a voltage source. The speaker guides the audience through the process of setting up the simulation in Proteus, including searching for components and configuring the oscilloscope for clear signal visualization. The video is sped up due to the time-consuming nature of the simulation setup.

05:00

🔊 Exploring FM Modulation and Its Output

In the second paragraph, the speaker focuses on the output of the FM modulation. They mention that the output signal from the simulation is named MP3 Tiny, which represents the FM signal. The speaker explains that the information signal is obtained from a capacitor, and the carrier wave is derived from another component. They connect this to a PDA, emphasizing that the carrier signal's frequency depends on the voltage in the middle of the circuit. The speaker has successfully simulated the circuit using the Proteus application, and it runs smoothly. They then provide a brief explanation of what CWM (PWM) and FM modulation entail, highlighting that PWM involves changing the pulse width while keeping the frequency constant, whereas FM changes the frequency of the carrier signal according to the information signal's voltage changes. The speaker concludes by summarizing the differences between PWM and FM modulations, noting that PWM alters the pulse width while FM alters both the frequency and period of the carrier signal. The speaker ends by thanking the audience for watching, encouraging likes, comments, and shares, and offering apologies for any shortcomings.

Mindmap

Keywords

💡Modulation

Modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted. In the context of the video, modulation is the main theme as it discusses two types of modulation: PWM and FM. The video explains how modulation is used to transmit information by altering the carrier signal's properties.

💡Pulse Width Modulation (PWM)

PWM is a type of modulation where the duration of pulses in a signal is varied while keeping the frequency constant. This method is used to encode information in the width of the pulses. In the video, PWM is one of the two modulation techniques discussed, and the script describes how the width of the pulses is adjusted using a potentiometer in a circuit to represent the modulation process.

💡Frequency Modulation (FM)

FM is a modulation technique where the frequency of the carrier signal is varied in proportion to the amplitude of the input signal. This results in a constant amplitude signal whose frequency changes to represent the information. The video script explains FM by contrasting it with PWM, highlighting that in FM, both the frequency and the period of the signal change, unlike PWM where only the pulse width varies.

💡Proteus

Proteus is a software tool used for simulation of electronic circuits. In the video, the script mentions using Proteus to simulate both PWM and FM modulations. This indicates that the video aims to demonstrate the practical application of these concepts through a software that can replicate the behavior of electronic circuits.

💡Diode

A diode is a two-terminal electronic component that allows current to flow primarily in one direction. In the script, a diode (specifically the 1N4007) is mentioned as one of the components used in the circuit for the modulation demonstration. Diodes are fundamental in electronic circuits for their unidirectional current flow property.

💡IC555

The IC555 is an integrated circuit used in a wide range of applications, including oscillators and timers. In the video script, the IC555 is listed as a component used in the circuit to generate the necessary signals for the modulation process. It plays a crucial role in creating the timing for the PWM and FM demonstrations.

💡Capacitor

A capacitor is a passive electronic component that stores energy in an electric field. In the context of the video, capacitors are used in the circuit to help filter or smooth out the signals, as well as to create the necessary timing for the modulation process. Capacitors are essential in many electronic circuits for their ability to store and release electrical energy.

💡Potentiometer

A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider. In the video, a potentiometer is used to adjust the pulse width in PWM, demonstrating how the modulation process can be controlled by varying the resistance value. This component is key in showing how the signal's properties can be manipulated.

💡Resistor

A resistor is a passive component that opposes the flow of electric current in a circuit. Resistors are used in the video's circuit to limit current flow, which is essential for the proper functioning of the circuit and the modulation process. They help in setting up the correct voltage levels and protecting other components from excessive current.

💡Signal

In the context of the video, a signal refers to the electrical representation of information, which can be modulated using various techniques like PWM or FM. The script discusses how signals are generated, modulated, and then observed using an oscilloscope. Understanding signals is fundamental to grasping the concepts of modulation and communication systems.

💡Oscilloscope

An oscilloscope is a test instrument used to display and analyze the waveform of electronic signals. In the video, the script mentions setting up an oscilloscope to view the output signals of the modulation process. This tool is crucial for visualizing and verifying the characteristics of the modulated signals, such as their frequency, amplitude, and pulse width.

Highlights

Introduction to two types of modulation: PWM (Pulse Width Modulation) and FM (Frequency Modulation).

Use of Proteus application for simulating both types of modulation.

Explanation of PWM modulation and its working principle.

Demonstration of the PWM modulation circuit using a diode, IC555, capacitors, potentiometer, and resistors.

Setting up the oscilloscope to observe the PWM signal.

Description of how to adjust the pulse width in PWM using a potentiometer.

Introduction to FM modulation and its working principle.

Construction of the FM modulation circuit with similar components as PWM.

Observation of the FM signal using the oscilloscope and its characteristics.

Explanation of how the frequency of the carrier signal changes in FM modulation.

Practical implementation of both modulation techniques using the Proteus application.

Comparison between PWM and FM modulation in terms of frequency and pulse width changes.

Clarification on the differences between PWM and FM modulation: constant frequency in PWM vs. variable frequency in FM.

Conclusion of the video with a summary of the key points about PWM and FM modulation.

Call to action for viewers to like, comment, and share the video if they find it useful.

Closing remarks with a thank you note and a sign-off in Arabic.