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.
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.
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.
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.
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.
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.
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.
Aug 14, 2016
The post explains a beacon indicator circuit for combine harvester grain tanks. The idea was requested by Mr. John Bosch.
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.
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.
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.