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Archives for 2019

Laughter Sound Simulator Circuit

Last Updated on May 15, 2026 by Swagatam 4 Comments

laughter block diagram

As the name suggests, this device generates electronic sound, resembling human laughter. BASIC DESIGN To enable the circuit start the proposed operations, it must have a fundamental sound input or frequency for processing. This basic frequency is established through a simple oscillator operating at 1 kHz frequency. The next, requirement would be to process this […]

Filed Under: Audio and Amplifier Projects Tagged With: Laughter, Simulator, Sound

1000 watt to 2000 watt Power Amplifier Circuit Diagram

Last Updated on May 15, 2026 by Swagatam 69 Comments

1000 watt amp

In this article I will elaborately discuss a simple to built yet awesome 1000 watt amplifier circuit, which could be easily upgraded to achieve upto 2000 watt output. It uses relatively fewer components and could be quickly set up for getting a massive 1000 watt power output on any 4 ohm, 1kva loudspeaker. This circuit […]

Filed Under: Audio and Amplifier Projects Tagged With: 1000, 2000, Amplifier, Power, Watt

Loud Pistol Sound Simulator Circuit

Last Updated on May 15, 2026 by Swagatam 38 Comments

pistol bang

The proposed circuit is an oscillator circuit designed to generate a loud pistol like sound over a loudspeaker. A pistol sound generator circuit presented here can be used as button operated starting sound during racing events or marathons, or simply to deter wild animals and thieves in remote areas. The concept could be also effectively […]

Filed Under: Audio and Amplifier Projects Tagged With: Loud, Pistol, Simulator, Sound

Prevent Amplifier Fuse from Blowing During Power Switch ON

Last Updated on May 15, 2026 by Swagatam 12 Comments

amp fuse protector

Is your power amplifier fuse blowing during power switch ON? It could be happening due to the initial high current drawn by the loudspeakers, when power is switched ON. The simple amplifier fuse protection circuits presented here can be effectively used for solving the issue. The problem is commonly seen in high power amplifiers, where […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Blowing, During, Fuse, Power, Prevent

Types of Arduino Boards with Specifications

Last Updated on May 14, 2026 by Swagatam 22 Comments

Arduino Uno WiFi rev 2

In this post we present a list of around 20 popular Arduino boards that are used by engineering students and professionals for their specific application needs. The types of Arduino boards discussed here are designed with a range of unique features and specifications to suit a desired application in the most effective way. The range […]

Filed Under: Arduino Projects Tagged With: Arduino, Boards, Specifications, Types

Bidirectional Switch

Last Updated on July 13, 2025 by Swagatam 79 Comments

bidirectional switch symbbol

In this post I have explained about MOSFET bidirectional power switches, which can be used for operating a load across two points bidirectionally. This is simply done by connecting two N-channel, or P-channel MOSFETs back to back in series with the specified voltage line. What is a Bidirectional Switch A bidirectional power switch (BPS) is […]

Filed Under: Power Supply Circuits Tagged With: Bidirectional, Switch

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