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Trick to detect Electronic Smog — 29 Dec 2011

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 —

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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IR Triggered White LED Lamp — 28 Dec 2011
Battery Level Meter —

Battery Level Meter


With this circuit, you can assess the voltage level in Lead Acid Car battery or Inverter battery. It gives LED indications in Dot Mode display to show the level of voltage in the battery. A Lead Acid battery attains 13.8 volts and tubular battery 14.8 volts in the fully charged state. If the battery voltage level drops below 10 volts, it needs immediate charging, and if it is not attaining full charge, it cannot be used to drive the load.

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Appliance Guard — 27 Dec 2011

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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