Circuit, Components, computer, Design, Electronics, Energy, Hobby Circuits, Home, Techniques

Electronic Guard


Inrush current at power on or power resumption after a power failure is the major cause of data loss and errors in Micro controller based electronic circuits.  This circuit gives a time delay of 2 minutes to stabilize the power before the device switches on.

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Circuit, Components, Design, Electronics, Energy, Hobby Circuits, Home, Internet, Techniques, Television

Trick to Protect TV


Here is a simple circuit to protect TV from high voltage spikes during lightning or a power surge in the cable. It can be incorporated in the Coaxial cable of TV Antenna or Set top box. It uses a GDT and Safety capacitor to provide protection from high voltage spikes. The same circuit can also protect Cable Modem and Telephone lines.

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Circuit, Components, computer, Design, Electronics, Home, Techniques, Television

Trick to Protect Home Appliances


Here is a low cost Spike protector for Electric appliances, TV, Computer etc from high voltage spikes that appear in the power lines. Very high voltage spikes and transients develop momentarily in the supply lines when lighting occurs. Such short duration high voltage spikes also super impose on the mains when high current loads are switched on or when power resumes after a power failure due to high magnetic field in the distribution transformer. Even though the spikes are short living, they can cause permanent damage in appliances. This MOV based circuit can be added in the existing switch board to protect the appliances from high voltage spikes. If heavy transients develop in the mains, the MOV in the circuit short circuit the lines and the fuse will blow out.

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