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Newly Updated Circuit Projects:

Making a Center Speaker Box C80 for Surround Sound Systems

Last Updated on May 15, 2026 by Swagatam 4 Comments

surround sound speakers

A Hi-Fi surround sound system (5.1) typically consists of 4 speakers at the corners of the room, and a center speaker just below or above the TV or the video system. This center speaker becomes the main speaker box of the surround sound since it is responsible for delivering the high quality voice output from […]

Filed Under: Audio and Amplifier Projects Tagged With: C80, Center, Making, Sound, Speaker, Surround

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

Solar Charge Controller for 100 Ah Battery

Last Updated on December 15, 2021 by Swagatam 32 Comments

100 Ah solar regulator

This comprehensive solar charge controller is designed to effectively charge a big 12 V 100 Ah battery with utmost efficiency. The solar charger is practically foolproof in terms of battery over charge, load short circuit, or over current conditions. By Vismit Singh The key elements of this 100 Ah solar regulator circuit are, obviously the […]

Filed Under: Solar Controller Circuits Tagged With: 100, Battery, Charge, Controller, Solar

Sine-Cosine Waveform Generator Circuit

Last Updated on September 22, 2026 by Swagatam 4 Comments

sine cosine generator circuit

The circuit discussed below is designed to generate precision sine and cosine waveforms, which are perfectly identical with their dimensions, but are 90° out of phase. There are a variety of applications which often demand a couple of sinewave frequencies which are of the identical frequency, but 90° out of phase. Simply put, a sine […]

Filed Under: Oscillator Circuits Tagged With: Cosine, Generator, Sine, Waveform

Simple Triac Phase Control Circuits Explored

Last Updated on May 20, 2026 by Swagatam 27 Comments

half phase control

In a triac phase control circuit, the triac is triggered ON only for specific portions of the AC half cycles, causing the load to operate only for that period of the AC waveform. This results in a controlled supply of power to the load. Triacs are popularly used as a solid-state replacement of relay for […]

Filed Under: Electronics Theory Tagged With: Circuits, Control, Explored, Phase, Simple, Triac

LM10 Op Amp Application Circuits – Works with 1.1 V

Last Updated on June 23, 2026 by Swagatam 9 Comments

LM10 internal set up

The LM10 is a pioneering operational amplifier designed to operate from single ended power inputs with voltages as low as 1.1V, and up to as high as 40V. As can be witnessed in Figure 1, the device consists of an op amp, a precision 200 mV band-gap voltage reference, and a reference amplifier, all encased […]

Filed Under: Mini Projects Tagged With: Application, Circuits, LM10, Works

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