How to Make Colloidal Silver at Home

Jun 30, 2012

The articles describes some wonderful experiments conducted by Mr.Steven, the images sent by him are just amazing and his work - pioneering, let's learn directly from Steven more about the developments....

Basics of Schmitt Trigger Circuits – Part 4

Jun 26, 2012


Schmitt triggers serve a purpose in any kind of high-speed data communication system with some form of digital signal processing. Actually, they serve a dual purpose: to clean up noise and interference on data lines while still maintaining a high data flow rate, and to convert a random analogue waveform into an ON-OFF digital waveform with fast, clean edge transitions.

Basics of Schmitt Trigger Circuits – Part 3


All Schmitt triggers are active devices relying on positive feedback to achieve their hysteresis action. The output goes to 'high' whenever the input rises above a certain preset upper threshold limit, and goes to 'low' whenever the input drops below a lower threshold limit.

Basics of Schmitt Trigger Circuits – Part 2

Jun 22, 2012


A Schmitt trigger is a simple concept, but it was not invented until 1934, while an American scientist by the name of Otto H. Schmitt was still a graduate student. He was not an electrical engineer, as his studies were focused on biological engineering and biophysics.

Introduction to Schmitt Trigger Circuits - Part 1

Jun 18, 2012



Submitted by Mr.Judith. 
Almost any digital circuit used in modern high-speed data communications needs some form of Schmitt trigger action on its inputs. The main purpose of a Schmitt trigger here is to eliminate noise and interference on data lines and provide a nice clean digital output with fast edge transitions.

Making a Joule Thief Charger Circuit

Jun 16, 2012


Continued from the previous article

Making a Joule Thief Circuit with Steven Chiverton - Part 2

Continued from the Previous Article

Dude i used to get bad head aches and stuff playing with air core coils so be careful putting higher volts in them..i once put so much in to my coil it cut my radio off 10 feet away and i almost blacked out.. so i killed the power and i was in a state of confusion for like 2 hours after that.. it took a long nap to fix me.
so be careful!!

Making a Joule Thief Circuit with Steven Chiverton - Part 1

Here are some recent updates sent to me by my friend Steven Chiverton. It's about the very popular joule thief circuit improvised by Steven in his own way. Let's get to the core of the developments with the following article:

Simple Voltage-to-Current and Current-to-Voltage Techniques - By James H. Reinholm

Jun 14, 2012

Submitted by Mr.Judith

There are many types of voltage-to-current and current-to-voltage converter circuits, and most of them use a combination of op amps and transistors to achieve a high level of accuracy. But when high accuracy isnt necessary, a simple converter of this type can be made using just one or two resistors.

Deriving Free Energy from Air Using a Sec Excitor Coil

The following experiment shows how interestingly Mr.Steven could draw free energy from air using his home-built sec exciter coil tower, he used it to a feed a small LM317 power supply unit and made it work successfully. Read more...

Charging a Small NiMh Battery from Air

Mr. Steven has devised an ingenious way of collecting energy from the air and using it for various useful purposes like for charging small 9v NiMh battery, or for making high voltages etc.

Building a Sec Exciter Circuit - By Steven Chiverton

Jun 10, 2012

One of my friends who is an inventor, a mad scientist and an intense electronic enthusiast Mr. Steven Chiverton is always upto discovering and making intriguing electronic circuits and gadgets. His outstanding efforts in the field of electronic is worth sharing and learning. After many months of disappearance, just a few days ago I received his email and without wasting anytime I requested him to update me with all his recent contribution to electronics and experiments. Let's learn what he had to say and what he was busy with for so long.

Use your PC like an Oscilloscope

Jun 8, 2012

As an electronics enthusiast or a hobbyist, you probably yearn for an oscilloscope to check out those elusive waveforms in your amplifier or radio. However, the cost deters you. A reasonably good oscilloscope will set you back by several hundred dollars, unless you buy a pre-owned piece or get one at the flea market.

Ground Electric Cable Faults, How to Detect them, a Discussion

The post discusses ground electric cable faults and the many methods to detect them through specialized devices.

MOSFET Protection from Overheating

Jun 6, 2012

Submitted by Mr.Judith 

Lighting dimmers often suffer from MOSFET failures. Most dimmers used in low-temperature AC industrial applications are enclosed and often embedded in the wall. This can cause heat dissipation issues, and can result in heat build-up - leading to a thermal event. Usually, the MOSFET used for the lighting dimmer circuits fails in 'resistive mode'. This generates heat, and results in a condition commonly known as thermal runaway - uncontrollable rising temperatures.

Basics of Strain Gauge Measurements - By James Reinholm

Jun 5, 2012


Submitted by Mr.Judith   
The strain gauge is one of the most useful tools for precisely measuring expansion or contraction of a material as forces are applied. Strain gauges are also useful for measuring applied forces indirectly if they are aligned approximately linearly with the deformation of the material.

Modifying a Car Tail Light Circuit

Jun 2, 2012

I have discussed a car tail light circuit with chasing features in one of my earlier blogs. The system is able to transform into a full fledged brake light with all the red LEDs lit and also is able to perform the function of chasing turn signal indicator by switching the same sets of LEDs.
Recently some modifications were suggested by one of the interested readers of this blog, let's know more it.
 

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