2023年12月29日 · Design an audio amplifier that takes input from a small microphone and can drive a small speaker. A condenser microphone can be used. The audio amplifier must be based on discrete devices and audio transformers may be used if needed. However, op-amp or IC amplifiers CANNOT be used. Moreover, base your design on locally available MOSFETs and …

2020年10月27日 · Every design process starts with listing the requirements. It appears that you've listed those, so that's a start. A Class-AB audio amplifier involves three stages: Input stage; Voltage Amplification Stage; Output stage. And the design of each stage requires: Basic circuit theory, Transistor-based amplifier design, Filter design,

2023年1月18日 · I am trying to find an example of a 3.3 V NPN transistor amplifier preferably based around a 2N2222 transistor. I have lost much knowledge about biasing and even schematic layout. I know this question is fairly open ended, but lets say I want something to look like the following circuit:

The first block is an EC amplifier stage which is to amplify my voltage according to the requirement. The second block is for power amplifier, in which I choose emitter-follower as driver stages before a push-pull circuit. I want to use class A stages in that position for impedance matching and to increase the total gain of the power amplifier

2024年12月24日 · \$\begingroup\$ > I've come across a circuit diagram for an audio amplifier using the LM741 op-amp -- Ignore it and keep on searching. That's not a good circuit. Instead of wasting time trying to fix a bad circuit, spend time working with a good circuit, one that works the first time and you don't have to come asking for help.

2020年6月3日 · I am trying to design an audio amplifier circuit using BJTs. These are the requirements of the circuit: Input signal: 50-100 mV (It's the output of my iphone's microphone.) 2 W - 4 ohms speaker; There is no requirement for DC voltage source. I can choose to feed enough my circuit. Here's the circuit: I'm having troubles with impedance matching.

2013年7月24日 · I'm new to Multisim and am using the 12.0 PowerPro version. I have designed the circuit in the question TDA2002 Audio Amplifier using Multisim: The Multisim circuit may be found here. Instead of a function generator or AC signal, is it possible to input an audio file and see its output in an oscilloscope?

2021年12月25日 · I'm currently working on an audio amplifier (first-time). To facilitate the negative feedback I decided using an Opamp to keep the circuit simple. I ended up with a simple emitter follower and a Vbe-multiplier for temperature compensation (currently adjusted for 50 mA quiescent current).

2023年1月8日 · Oscillation amplitude is often small, since amplifier negative feedback operates to limit the swing. If you look carefully, this high-frequency oscillation may look triangular. At such high frequencies, the 0.05uf capacitor is a short-circuit, while at audio frequencies it is nearly open-circuit. So not much math involved.

I am trying to design a audio amplifier circuit but I do now know where to start. The only requirement given to us is for it to be a 1 watt amplifier. We have decided to use a 9v DC battery as source. I searched in google about the designs but I …