Designing a Solar Inverter Circuit - Tutorial

Jul 30, 2016

Designing a solar inverter circuit essentially requires two parameters to be configured correctly, namely the inverter circuit and the solar panel specs. The following tutorial explains the details thoroughly.

Dimmer Circuit for LED Bulbs

Jul 28, 2016

In this article we learn how to make a dimmer circuit for LEDs bulbs and LED tubes which are intended to be operated with mains 220V or 120V.

How to Make a Zero Crossing Detector Circuit

Jul 27, 2016

Making a zero crossing detector circuit is actually very easy and it could be effectively applied for protecting sensitive electronic equipment against mains switch ON surges.

High Power DRL Light Circuit

Jul 26, 2016

The post discusses a multipurpose high power DRL circuit which can be used as park lights, head lights and also to specially respond to turn signal lights in order to light up the kerbs while passing through unpredictable blind turns or corners and subways. The idea was requested by Mr. Ian Auxley.

Connecting MPPT with Solar Inverter

Jul 25, 2016

The small discussion presented in this article explains whether or not it is advisable to Connect parallel MPPTs with Solar inverters for increasing the net current value of the MPPTs. The question was raised by Mr. Ahmed Qaid

Triac SPDT Relay Circuit

Jul 23, 2016

The post details a simple solid state triac SPDT relay circuit, using an optocoupler and a couple of triacs, which can be used as an effective replacement for mechanical relays. The idea was requested by "Cypherbuster".

LED Room Thermometer Circuit using Arduino

Jul 22, 2016

In this article, we are going to construct a LED room thermometer circuit using Arduino, which displays the readings in doted/bar LEDs. This project can be implemented for applications where ambient temperature plays a crucial role or it could be built just as another fun project for your home.

Alternate Switching Relay Timer Circuit

Jul 21, 2016

In this post we learn how to make a simple IC 555 based alternate relay timer circuit for toggling a couple of loads alternately with a specified length of delay, as determined by the calculated values of the relevant components. The idea was requested by Mr. Sanjoy.

3 Phase Induction Motor Speed Controller Circuit

In this post we discuss the making of a simple 3 phase induction motor speed controller circuit, which can be also applied for a single phase induction motor or literally for any type of AC motor.

How to Design an UPS Circuit - Tutorial

Jul 19, 2016

In this brief tutorial we learn how to design a customized UPS circuit at home using ordinary components such as a few NAND ICs and a some relays.

Automatic Temperature Regulator Circuit using Arduino

Jul 18, 2016

In this article we are going to construct a simple automatic temperature regulator circuit which will turn on the fan or any other gadgets connected to it, when the ambient temperature reaches a pre-determined threshold level. We are going to utilize DHT11 sensor and arduino for this project.

Simple Refrigerator Protector Circuit

Jul 15, 2016

This simple refrigerator protector circuit is actually a delay ON timer circuit which makes sure that whenever a power failure occurs or in case abrupt power fluctuations take place, the refrigerator is never allowed to switch ON instantly, rather after a delay of a few moments.

How Electret Microphones Work

The post explains how electret microphone devices work, through appropriate diagrams and formulas.

Laser Activated GSM Call Alert Security Circuit for Home

Jul 14, 2016

In this post we discuss a simple laser GSM call alert security circuit which immediately calls the master as soon as an intruder is detected through a laser beam interruption. The idea was requested by Mr. Roldan.

Simple Touch Sensor Switch Circuit

Jul 12, 2016

A simple touch sensor switch circuit can be built using a single IC 4017 and a few other passive components, the procedure is explained in the following article.

Digital Temperature, Humidity Meter Using Arduino

Jul 8, 2016

In our previous article, we learned how to interface temperature humidity sensor with arduino and read out displayed on serial monitor of arduino IDE. In this post we are going to learn how to display the reading on a 16x2 LCD display for the proposed digital temperature/humidity meter using Arduino.

Interfacing DHTxx Temperature Humidity Sensor with Arduino

Jul 6, 2016

In this article we are going to take a look at DHTxx series sensors, which is used for measuring temperature and humidity, both the functionality is integrated into one module.

Touch free Faucet Circuit

Jul 5, 2016

A very simple touch free faucet circuit or touch free tap circuit can be built using as little as an IC 555 and a few passive components, in order to implement a contact less water supply operation from the attached facet or the tap.

SCR Shunt for Protecting Capacitive LED Driver Circuits

Jul 3, 2016

The post presents an effective method for protecting capacitive LED driver circuits through an SCR shunt regulator circuit and explains how it can prevent filter capacitors from blowing of and LEDs from getting destryed.  The remedy was requested by Mr. Max Payne.

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