## Simple Portable Audio Power Amplifier Circuit Using lm386 IC

Here circuitsgallery comes with the simplest mini audio amplifier circuit schematic using LM386 low voltage audio power amplifier IC. This circuit is applicable to power medium-sized speakers from a music player that can only drive earphones (lm386 headphone). The LM386 is a low voltage power amplifier…

## How to Plot a 2d Function in MATLAB? Basic Steps for MATLAB Plotting

You can easily plot different functions using MATLAB. To plot a 2D function in MATLAB you must first choose an independent variable. Let it be ‘x’. This variable will form an axis of the plot, more likely the horizontal or…

## Mobile Sniffer or Mobile Phone Detector Circuit | Engineering and Diploma Project

Here is a simple engineering project circuit of a handy mobile phone detector circuit (sniffer). The pocket-size mobile communication detector or sniffer can sense the existence of mobile. So you can use it to avoid the use of mobile phones in private rooms, examination halls,…

## Getting Started With MATLAB | How to Create Your First Matlab Project?

The name MATLAB stands for MATrix LABoratory. It is the fourth-generation programming language and is developed by Mathworks Inc., USA. MATLAB is great for doing array manipulation, doing specialized math functions, and creating nice plots quickly. It is a Matrix-based powerful…

## Simple Transistor Tester Circuit Using 555 Timer IC

Most electronics hobbyists face such difficulties. Faulty components drive us crazy and make us hate electronics hobby circuits. It’s quite a common scenerio for electronics DIYers to run into some faults while setting up a circuit. In a good number…

## Simple Home Audio Power Amplifier Circuit Schematic

You are now going to be introduced with a new audio power amplifier schematic built around TIP Darlington pair transistors. You can use this circuit for home audio power amplifiers and car audio amplifiers. The TIP142 and TIP147 Darlington pair transistors form a push-pull high power amplifier configuration while the two BC558 PNP transistor…

## Home Security Alarm System Circuit Diagram

Have you ever thought about home security? And implementing your own home security alarm systems? It’s one of the simplest and most interesting circuits for electronic beginners. Our new home security equipment uses an LDR (Light Depended Resistor) to detect security problems. Theft attempts and other…

## Arduino Simulator Using Proteus Library | Simulate Arduino in Proteus

Hi there! Today let’s make an Arduino project without having a real Arduino board! Yes, it’s possible by dint of Arduino simulator using Proteus library. Maybe you have already seen (or will see) Arduino programming in some of my articles. Arduino is…

## Bridge Rectifier Regulated Lab Power Supply Circuit Schematics Using 78XX Voltage Regulator

A good regulated AC to DC power supply circuit is essential for any electronic hobbyists and electronic students to do their electronics hobby projects. Also, a bridge rectifier power supply is one of the introductory circuits for beginners.  Firstly we need to know what is a…