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Newly Updated Circuit Projects:

Make this Bass Booster Speaker Box

Last Updated on May 15, 2026 by Swagatam 2 Comments

low pass filter compressed

In this article I have explained the construction of the high bass boost speaker box system, which can be used for reproducing music with heavy bass effect, which can be adjusted with a potentiometer. By: Alfy Mackenzie Most of the affordable hi-fi systems in the market have decent mid-range and treble feedback but do not […]

Filed Under: Audio and Amplifier Projects Tagged With: Bass, Booster, Speaker

100 to 160 watt Power Amplifier Circuit Diagram using a Single IC OPA541

Last Updated on May 15, 2026 by Swagatam 19 Comments

single chip 100 watt amplifier

For anyone who is searching for an audio amplifier with massive output power in the order of 100 watt to 200 watts, using an absolute minimum parts count, this particular circuit will accomplish it. How the Circuit Works The IC OPA541 from Burr-Brown is a power opamp is specially designed to work from power supplies […]

Filed Under: Audio and Amplifier Projects Tagged With: 100, 160, Amplifier, Power, Single, Watt

Simple Mini Audio Amplifier Circuits

Last Updated on May 15, 2026 by Swagatam 21 Comments

1 watt transistor amplifier

In this article we are discussing a handful of simple, mini audio amplifier circuits which can be built quickly for amplifying very tiny input signals into audible speaker outputs. 1) 1 Watt Amplifier Circuit The first simple mini audio amplifier circuit works with a ‘complementary’ output stage, having a single NPN and a single PNP […]

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

How to Design MOSFET Power Amplifier Circuits – Parameters Explained

Last Updated on May 15, 2026 by Swagatam 15 Comments

BJT vs MOSFETs

In this post I have explained various parameters that must be considered while designing a MOSFET power amplifier circuit. We also analyze the difference between bipolar junction transistors (BJT) and MOSFET characteristics and understand why MOSFETS are more suitable and efficient for power amplifier applications. Contributed by Daniel Schultz Overview When designing a power amplifier […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Circuits, Design, MOSFET, Parameters, Power

Listen to UHF and SHF (GHz) Bands with this Simple Circuit

Last Updated on May 15, 2026 by Swagatam 24 Comments

GHz receiver circuit

This simple two IC circuit can be used for capturing and listening to frequencies in the GHz range. Receivers designed to cover frequencies as high as several gigahertz (which is many thousand MHz!) are generally difficult to find, specifically for anyone who is looking for cheap versions of these gadgets. However, it may be possible […]

Filed Under: Audio and Amplifier Projects Tagged With: Bands, Listen, SHF, Simple, UHF

Electronic Drum Sound Simulator Circuits

Last Updated on May 15, 2026 by Swagatam 7 Comments

drum sound simulator compressed

In this post we talk about a couple electronic drum sound simulator circuits which can be used for replicating actual drum beat sound electronically, using a few op amps and few other passive electronic components. Using Capacitor as the Sensor Instead of Piezo Conventional electronic drum kits incorporate the use of piezo disc affixed to […]

Filed Under: Audio and Amplifier Projects Tagged With: Circuits, Drum, Electronic, Simulator, Sound

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