Mad Of Electronics

Here u can find some useful tips and links related to troubleshooting electronic appliances


Posted by rajascientist Monday, August 3, 2009

Electrical impulses in the heart originate in the sinoatrial node and travel through the intrinsic conducting system to the heart muscle.The impulses stimulate the myocardial muscle fibres to contract and thus induce systole. The electrical waves can be measured at selectively placed electrodes (electrical contacts) on the skin.

These small electrical signals can be measured using a multimeter. Adjusting the multimeter to 200 or 2000mv dc the electrical signal produced can be measured. The strength of this signal vary from point to point ,that can be understood by touching multimeter electrode at different places on our skin.

When i measured my own body signals i got around 125 mv sometimes, suddenly i an idea flashed me i thought of amplifying this voltage to produce around 1 volt so that i can light some small bulb.

So now how to amplify , thought for a while then one thing struk my mind thats the voltage multiplier .

A voltage multiplier is an electrical circuit that converts AC electrical power from a lower voltage to a higher DC voltage by means of capacitors and diodes combined into a network. Voltage multipliers can be used to generate bias voltages of a few volts or tens of volts or millions of volts for purposes such as high-energy physics experiments and lightning safety testing.

The above circuit is an example of typical voltage quadrupler a type of voltage multiplier,

I used around 10 capacitors and diodes that is output volt is 10 times the input voltage. The circuit is in process I will tell u later whether I succeeded in lighting a small bulb.


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