0-60V LM317 Variable Power Supply Circuit

Aug 31, 2016

The high voltage LM317HV series of ICs will allow to go beyond the traditional voltage limits of an LM317 IC and enable controlling supplies that may be as high as 60V.

Free Energy from Induction Cooktop

Aug 28, 2016

The idea of acquiring free energy from induction cookwares using an external bifilar coil was suggested by one of the keen enthusiasts and a regular visitor of this blog. Let's learn more regarding the details of this interesting free energy device, as explained by the author himself.

Making a Thermoelectric Generator Circuit (TEG)

Aug 27, 2016

A thermoelectric generator (TEG) is a kind of "free energy device" which has the property of converting temperature into electricity. In this post we learn a little about this concept and find out how we can use it to generate electricity from heat and cold.

Deep Soil Metal Detector Circuit - Ground Scanner

Aug 25, 2016

The post discusses a simple deep under soil metal detector circuit for evaluating hidden metals such as gold, iron, tin, brass etc by detecting change in the resistance of the relevant soil layers.

IR Remote Control Circuit Using Arduino

Aug 24, 2016

In this post we are going to construct a customizable IR (infrared) based wireless remote control switch, which consists of IR remote and a receiver, you may modify according to your needs.

Natural Mosquito Repellent Circuit Using High Watt Resistor

Aug 23, 2016

As the name suggests, to build this simple natural mosquito repellent circuit you will just require a high watt resistor, a few drops of lemon eucalyptus oil and  mains supply input.

Incubator Temperature Controller Circuit using LM35 IC

Aug 22, 2016

A very simple egg incubator temperature controller thermostat circuit using LM 35 IC is explained in this article. Let's learn more.

SG3525 Pure Sinewave Inverter Circuit

Aug 20, 2016

In this post we learn how to make a SG3525 pure sinewave inverter circuit using a straightforward PWM integration.

Arduino Digital Clock Using RTC Module

Aug 15, 2016

In this post we are going to construct a digital clock using RTC or Real Time Clock module. We will understand what “RTC” module is, how to interface with Arduino and what it does.

Beacon Level Indicator Circuit for Combine Harvester Grain Tanks

Aug 14, 2016

The post explains a beacon indicator circuit for combine harvester grain tanks. The idea was requested by Mr. John Bosch.

Corona Effect Generator Circuit

Aug 12, 2016

In this post we study regarding what is corona effect and how to make a corona effect generator circuit at home using a CDI coil and a tesla coil configuration. Then idea was suggested by Mr. Sanjoy

7 Segment Digital Clock Circuit Using Arduino

Aug 10, 2016

In this post we are going to construct a digital clock using 7 segment LED display with Arduino controlled design.

Battery Full Charge Indicator Circuit using Two Transistors

Aug 8, 2016

This little circuit will alert the user regarding a battery reaching its full-charge level (over charge) while it's being charged, by illuminating an LED. The circuit uses just a couple of transistors as the main active components.

How to Make a Crank Flashlight Circuit

In this article we are going to construct a crank flashligh circuit which requires no battery. It’s not free energy, but it converts oscillatory motion to electricity, which can power the flashlight for a couple of minutes. This flashlight will be useful in emergency situations where no access to electricity or batteries.

Simple Tea Coffee Vending Machine Circuit

Aug 6, 2016

A simple tea, coffee vending machine circuit idea is explained here which allows a customer to access the beverage with a press of a button and by inserting a genuine 5 rupee coin. The idea was requested by Mr. Ramesh.

Electronic Door Circuit for Pets

Aug 2, 2016

The post explains a simple electronic door circuit for pets which can be used as an electronic dog door for allowing only your specific pet dog to use the entrance, while keeping it locked for "strangers". The idea was requested by Mr. Dave Monette.

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