Find an actual published audio amplifier designed with discrete components involving BJT’s or FET’s and discuss what amplifier class it implements and how it does this.
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" This amplifier is based on a design by Dr. Marshall Leach and is widely recognized in the audio community for its high performance and use of discrete BJTs (Bipolar Junction Transistors). Show more…
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As shown in Fig. 1, a detailed design of the audio amplifier. 1- Simulate the circuit on any preferred simulation tool of your choice (SPICE, Proteus). You can use an AC-source as the input signal, and you can also use a regular resistive load as a speaker. - Perform DC-Analysis to calculate all currents and voltages for all circuit elements. - Perform AC-Analysis to calculate the amplifier's voltage gain. This project aims to use the studied devices throughout the semester to develop a very popular circuit, the "audio amplifier." The goal of this project is to ensure that you can fully understand the concepts of BJT amplifiers and how they work, different BJT amplifier topologies, and the usage of each. The project involves the input sound signal and the speaker.
Adi S.
Design an amplifier circuit (common emitter or common base) that satisfies the following specifications: Input impedance in the range of (100 ohm - 15 Kohm) Output impedance in the range of (4 Kohm - 10 Kohm) No-load voltage gain is greater than 10 Choose suitable values of resistors to guarantee the Q point of the amplifier is in the active region. Build your circuit design using software programs and ensure it satisfies the specifications. Write a report that explains your circuit design. Record a video that explains your circuit design using software programs.
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Problem: Design an amplifier that can take an input of ±0.5V from a source with an internal resistance of 100 ohms and deliver it to a 100 ohm load with good linearity and less than 10% attenuation. Requirements: 1. You are limited to DC supplies of ±5V. 2. You are limited to a single transistor (CD4007 MOSFET, 2N3904 NPN BJT, or 2N3906 PNP BJT). 3. You are not allowed to use op-amps. 4. You should be able to explain the choice of circuit, transistor, how the circuit works, and design tradeoffs.
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