Bread board Regulated Power Supply


You can use this multi voltage power supply for the bread board projects. Most of the circuits require regulated power supply for errorless operation. This power supply can give regulated 12V, 9V, 6V and 5 V. Charger point for battery charging and Test point for LED and Buzzer are also included.

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Trick to detect Electronic Smog


Electrons are invisible to human eye then how can we see the electronic smog existing in our home. Is there any method to see them? Impossible, the only method is to capture the energy from it to activate a circuit for giving a visual indication. When you sit in front of a computer or television, you are being bombarded by harmful waves quietly emanating from it. Even if you turn off the device, your biomagnetic field is still bombarded 24 hours a day, 7 days a week by the EM radiations from power cables, electric and electronic instruments etc. These radiations of different frequencies exist in our environment as Electronic Smog. Extremely low frequencies waves (ELF) exist wherever electricity flows and radiate it from every electrical item in your environment. Let us try this circuit to give a visual indication of the electronic smog.

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Unusual LED Indicator


Here is an Unusual LED indicator for the Battery. It turns on fully when the battery voltage is above 13 volts and starts to blink faintly when the voltage drops below 12 volts .Finally the LED turns off  when the voltage drops below 10 volts. Its design is unusual because the LED driver transistor is connected in an unusual way.

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Appliance Guard


This circuit protects home appliances from low voltage. When the voltage in the AC lines drop below the normal voltage, the circuit cut off  power to the appliance and keep it off till the normal voltage resumes. This gadget is useful to protect appliances like Fridge which may over heat if the line voltage drops below 180 volts. Voltage drop also increases the current consumption in Fridge due to over stress on the compressor.

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Electrical Energy


Like all other forms of energy, electrical energy is the capacity to do work. Like other forms of energy, electrical energy can be converted into other forms such as light energy, heat energy etc. Energy can only be transferred when a difference in energy level exists.

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Electronic Energy Meter


An Electronic Energy Meter (EEM) functionally outperforms the traditional Ferrari’s wheel meter. One important advantage of EEM is that in non linear loads, its metering is highly accurate and electronic measurement is more robust than that of the conventional mechanical meters. The Power companies benefits from EEM in three significant ways

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