Use Single Switch for Fog lamp and DRL LED’s
The post explains an easy method of upgrading your existing car fog lamp switch such that it allows toggling both the fog lamp as well as the DRL lamps alternately, as per the owner's requirement.The...
View ArticleBest Engineering Circuit Projects for Final Year Students
In this post we sort out a list of most popular, hand-picked and best engineering circuit projects specially created for all aspiring engineers for their final year project exhibition. The circuit...
View ArticleUSB 5V Audio Amplifier for PC
In this article we will learn how to build a simple 3 watt amplifier circuit which can be powered directly from a computer 5V USB port for driving an 8 ohm 3 watt speaker. You can build a couple of...
View ArticleHow to Make a Wireless Robotic Arm using Arduino
Last updated on August 6th, 2018 at 03:43 pmThis robotic arm circuit which can be also implemented like a robotic crane, works using 6 servo motors and can be controlled through a microcontroller...
View Article7 Modified Sine Wave Inverter Circuits Explored – 100W to 3kVA
The following article presents 7 top modified sine wave inverter designs with exhaustive descriptions regarding its construction procedure, circuit diagram, waveform output and detailed parts lists....
View Article3 Best 3.7V Li-Ion Battery Charger Circuits using Specialized Intelligent ICs
The post elaborately explains 3 automatic intelligent single chip CC/CV or constant current, constant voltage 3.7V Li-Ion battery charger circuits, using IC TP4056, IC LP2951, IC LM3622, with battery...
View Article4 Simple Clap Switch Circuits using Transistors, Opamp, and IC 555
Want to build a simple clap switch circuit that will toggle any load in response to your claps? The article is meant exactly for the said purpose. A small sound activated switch circuit comprising a...
View Article3 Ideal True/ Pure Sine Wave Inverters using Audio Power Amplifier
If you are not too keen in understanding the deep technical aspects of a true sine wave power inverter, yet want to build it within a couple of hours, then this article will help you to accomplish it...
View Article3 Best LED Joule Thief Circuits – Working Details and Video Attached
Technically it may seem impossible to illuminate a 3.3V LED with a 1.5V source, but the amazing concept of joule thief makes this look so easy and effective, and virtually unbelievable, moreover the...
View Article3 Simple DC Motor Speed Controller Circuits with High Torque
When it comes to controlling motor speeds uniformly and efficiently, a PWM based controller becomes the best option, learn more regarding a simple circuit to implement this operation. Three concepts...
View ArticlePressure Cooker Whistle Counter Circuit
This circuit is designed to sense the whistles from a pressure cooker and count the number over a digital display. The system relieves the user from the stress of constantly monitoring the cooker and...
View ArticleWireless Music Level Indicator
This simple circuit will create dazzling LED light effect by detecting any music frequency in the atmosphere and by illuminating a 10 LED bar graph meter, indicating the level of music. The proposed...
View ArticleSimple 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...
View ArticleLearning 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...
View ArticleEmitter-Stabilized BJT Bias Circuit
We have already studied what is DC biasing in transistors, now let's move ahead and learn how an emitter resistor can be used for improving the stability of a BJT DC bias network. Applying Emitter...
View ArticleVoltage-Divider Bias in BJT Circuits – More Stability without beta Factor
In the previous bias designs that we learned the bias current ICQ and voltage VCEQ were a function of the current gain (β) of the BJT. But, as we know that β can be vulnerable to temperature changes,...
View ArticleBipolar Junction Transistor – Construction, and Operational Details
Introduction During 1904–1947, the vacuum tube was unquestionably the electronic device of great curiosity and growth. In 1904, the vacuum-tube diode was launched by J. A. Fleming. Soon afterwards, in...
View ArticleUnderstanding Common Base Configuration in BJTs
In this section we are going to analyze BJT common-base configuration, and learn regarding its driving point characteristics, reverse saturation current, base to emitter voltage and evaluate the...
View ArticleUnderstanding Common Emitter Configuration in BJTs
By far the most commonly used transistor configuration can be seen in Fig. 3.13 below for both pnp and npn transistors. This configuration is known as common-emitter configuration because the emitter...
View ArticleHow Cathode Ray Oscilloscopes (CRO) Work
In this post we will elaborately discuss the working and the internal construction of a cathode ray oscilloscope. We will also learn how to use a CRO using the various controls and understand the...
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