Redundant UPS Circuit

Nov 30, 2015

The post explains a couple of straightforward redundant UPS circuits for providing a secured uninterruptible power to crucial gadgets such as computer ATX or modems etc. The idea was requested by Mr.  Shayan Firoozi.

What's Ripple Current in Power Supplies

Nov 27, 2015

The post explains regarding what's ripple current in power supply circuits, what causes it and how it can be reduced or eliminated using smoothing capacitor.

Calculating Filter Capacitor for Smoothing Ripple in Power Supply Circuits

In the previous article we learned about ripple factor in power supply circuits, here we continue and evaluate the formula for calculating ripple current, and consequently the filter capacitor value for eliminating the ripple content in the DC output.

Digital Power Meter Circuit

Nov 26, 2015

The article discusses a simple digital power meter circuit which can be installed in homes for getting an instant reading of the wattage being consumed by the attached appliances or the loads. The idea was requested by Mr. Nitin.

120V, 220V Electronic Ballast Circuit for Twin 40 Watt Fluorescent Tubes

Nov 25, 2015

In this article we learn how to build a simple yet extremely reliable electronic ballast circuit for driving or operating two 40 watt fluorescent tubes, with an active power correction.

ATX UPS with Charger Circuit

Nov 24, 2015

 The post explains a simple ATX UPS circuit with an automatic charger for enabling an automatic changeover from mains to battery power during mains failures and for ensuring an uninterruptible operation of the ATX load. 

Automatic Evaporative Air Cooler Circuit

Nov 21, 2015

In this post we study a simple moisture sensor circuit which enables an evaporative air cooler to automatically restore the wetness level of its evaporative pad by detecting its moisture level and by activating the water pump accordingly. The idea was requested by Mr. Ankur shrivastava

LED Timer Indicator Circuit for Board Games

Nov 19, 2015

The article presents a simple LED indicator timer circuit which can be used with board games for indicating the elapsed time or the time consumed by the player to complete his or her turn. The idea was requested by Mr. Shane Robins.

LED Meteor Shower, Rain Tube Circuit

Nov 18, 2015

In this post we learn how to design an intriguing LED light effect that generates a collapsing metor shower like appearance. The idea was requetsed by Mr.Pinto Mondal.

Simple Gate Open/Close Controller Circuit

Nov 17, 2015

The simple gate open and close controller circuit is designed to operate the gate through a couple of push buttons manually, it can be also modified for implementing the activation through a remote control.

Regenerative Braking System for Vehicles

Nov 16, 2015

Whenever brakes are applied in any vehicle, a lot of energy is wasted in the process of stopping the vehicle mass and again restoring the mass back to its original speed. The simple idea designed by me appears to be quite effective in solving this issue. Let's learn more about this simple regenerative braking concept.

Making a Free Energy Generator - Part 2

In the previous post we learned the concept of the popular free energy generator called the N machine, designed and developed by Bruce DePalma. In this post we'll try to understand the entire mechanism and the making of this free energy generator design.

Making a Free Energy Generator - Part 1

Nov 15, 2015

When this free energy geneartor called the N-Machine was developed by the famous physicist Bruce DePalma he could implement a 100 kilowatt generator right in his garage with ordinary tools. His machine could power his entire house electrical completely free of cost, forever.

Darkness Triggered Car Safety Park Light Circuit

Nov 13, 2015

In this post we discuss a circuit concept for enabling cars with an add-on automatic safety park light which triggers during night and signals the position of the car and consequently prevents a mistaken collision or dashing by another vehicle. The design ensures minimum consumption and relatively higher brightness for the involved LED lights. The idea was requested by Mr. Ankit.

Flashing Red, Green Railway Signal Lamp Circuit

Nov 12, 2015

In this post we learn how to make a simple railway signal lamp which can be used by the guards for providing a handheld signalling to the various trains with the many specified signalling modes. The idea was requested by Mr. Bala.

Arduino Random RGB Light Generator Circuit

Nov 10, 2015

The  article discusses a simple,Arduino red, green, blue LED light effect generator circuit in a random pattern.

Simple Arduino Temperature Meter Circuit

Nov 9, 2015

In this post we learn how to make a simple, extremely accurate Arduino temperature sensor with Indicator circuit, using an advanced digital LCD display readout module.

Arduino Stop Watch Circuit

In this post we learn how to configure a simple and extremely accurate Arduino stop watch circuit.

Arduino LCD KeyPad Shield (SKU: DFR0009) Datasheet

Nov 7, 2015

The write up explains the pinout and working details of the LCD module "Arduino LCD KeyPad Shield (SKU: DFR0009)" which is specifically manufactured for offering a quick plug-in compatibility for all Arduino based applications which may require displaying a particular parameter in digits, such as temperature, speed, time, weight etc.

Arduino RGB Flowing Sequential Light Circuit

Nov 6, 2015

 This Arduino RGB sequential light generator circuit will generate a smooth flowing red, green blue pattern over the connected RGB LED.

Arduino Musical Tune Geneartor Circuit

Nov 5, 2015

You can use this little Arduino musical tune generator circuit for a preferred application, such as for making an interesting door bell, as a car reverse horn, or music box for gifting somebody, or simply for personal amusement.

Arduino Siren Sound Generator Circuit - Customizable

Nov 4, 2015

The proposed Arduino siren sound generator circuit the tone of a perfectly imitating siren sound which can be customized to produce many different siren effects simply by making relevant modification in the sketch.

Simple Solar MPPT Circuit - Part 2

Nov 3, 2015

This post is the concluding part of one of the earlier MPPT related posts, and here we evaluate the final design of the proposed simple MPPT circuit through formulas and calculations.

Power Bank Circuit using 3.7V Li-ion Cells

Nov 1, 2015

The article presents a handful of assorted power bank circuits which can be built by any individual for their personal emergency cellphone charging functionality. The idea was requested by Mr. Irfan

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