Full Bridge Bidirectional Motor Controller Circuit using LM324 IC

In this article we discuss a Full bridge or H bridge based Bidirectional motor controller circuit using the 4 opamps from the IC LM324. Introduction Generally, mechanical switches are accustomed to adjust the direction of rotation of a DC motor. Adjusting the polarity of the utilized voltage and the motor rotates the opposite direction! On … Read moreFull Bridge Bidirectional Motor Controller Circuit using LM324 IC

Understanding Amplifier Circuits

In general, an amplifier can be defined as a circuit designed to boost an applied low power input signal into a high power output signal, as per the specified rating of the components. Although, the basic function remains the same, amplifiers could be classified into different categories depending on their design and configurations. Circuits for … Read moreUnderstanding Amplifier Circuits

Learning Basics of Semiconductors

In this post we comprehensively learn regarding the fundamental working principles of semiconductor devices, and how the internal structure of semiconductors function under the influence of electricity. The resistivity value between these semiconductor materials neither has a complete conductor characteristic nor a complete insulator, it is in between these two limits. This feature may define … Read moreLearning Basics of Semiconductors

Cellphone Controlled Dog Feeder Circuit

A GSM module and Arduino based dog feeder circuit is discussed in this post. The system can be used for operating a dog feeder mechanism through the owner’s cellphone whenever it may be required. The idea was requested by Mr. Allan Guillermo through one of his comments Introduction Although all domestic animal species are lovable, … Read moreCellphone Controlled Dog Feeder Circuit

Learning Basic Arduino Programming – Tutorial for the Newcomers

In this tutorial we learn how to do basic Arduino programming through example codes and sample programs. This tutorial can be an extremely valuable course for all the newcomers who wish to grasp the basics through easy, understandable language. Introduction According to wikipedia a microcontroller is equivalent to a mini computer built inside a single … Read moreLearning Basic Arduino Programming – Tutorial for the Newcomers

Simple Alcohol Detector Meter Circuit using MQ-3 Sensor Module

The simple alcohol sensor circuit discussed here will accurately sense the emanation of alcohol gas from a selected source, such as from the mouth of a drunkard, when used as a breathalyzer. It’s cheap and a useful device which can be used by all authorized personnel such as a cops or traffic police for nabbing drunken … Read moreSimple Alcohol Detector Meter Circuit using MQ-3 Sensor Module