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Analyzing Class B and Class AB Amplifier Models

Last Updated on June 26, 2023 by Swagatam Leave a Comment

figure 1

Both the majority of class B or AB power amplifiers currently encountered in HI-Fi amplifiers are presented in the form of integrated circuits specifically designed for this purpose. It is interesting for technicians to know how this type of amplifier works, if only out of intellectual curiosity. The provided model allows the study of several […]

Filed Under: Audio and Amplifier Projects Tagged With: AB, Amplifier, Analyzing, Class, Models

Class-D Sinewave Inverter Circuit

Last Updated on December 26, 2020 by Swagatam 37 Comments

class D inverter circuit compressed

A sinewave inverter using class-D amplifier functions by converting a small sinewave input frequency into equivalent sine PWMs, which is finally processed by an H-bridge BJT driver for generating the mains sinewave AC output from a DC battery source. What is Class-D Amplifier The working principle of a class-D amplifier is actually simple yet extremely […]

Filed Under: Inverter Circuits Tagged With: Class, Inverter, Sinewave

6 Simple Class A Amplifier Circuits Explained

Last Updated on August 2, 2024 by Swagatam 25 Comments

amp

In this post I have explained 6 simple, cheap class A power amplifier circuits which can be used for any small scale audio amplifier application. By: Dhrubajyoti Biswas 1) Zero Negative Feedback Amplifier This following data will detail how to build an amplifier having zero negative feedback which implies building a zero component amplifier. The […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Circuits, Class, Explained, Simple

3.7 V Class-D Speaker Amplifier Circuit for Differential Analog Input

Last Updated on May 5, 2022 by Swagatam 8 Comments

BD5460GUL

A class D amplifier is basically a category of amplifier in which the power devices (mosfets and BJTs) are operated like switches. The associated output devices in such amplifier circuits either turn fully ON or fully OFF, but never switch between other undefined levels ensuring minimal heat dissipation and maximum efficiency from the devices. The […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Analog, Class, Differential, Input, Speaker

Make a Simple Class D Amplifier Circuit

Last Updated on December 21, 2023 by Swagatam 47 Comments

class D amplifier circuit

In this article I have explained two simple class-D amplifier projects which can be built at home with extremely high efficiency results. A Class D amplifier is also known as switching amplifier. This technology uses pulse width modulation or PWM for digitally amplifying small analogue music signals into high power, high efficiency audio signals. Why […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Class, Simple

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