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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Transil, Trisil and SIDAC


Transil is the trade name of Transient Voltage Suppression diode or TVS diode of ST Microelectronics, Transil diode is used to protect sensitive electronic devices from voltage spikes and transients induced by the mains. Transil protects the circuit by shunting excess current if the induced current exceeds the avalanche breakdown point. It works like a clamping diode to remove all the excess voltage induced. When the overvoltage condition goes off, the Transil automatically resets. Trisil is the trade name of the Thyristor Surge Protection device, another surge protector for electronic equipments. SIDAC is also a protection device less commonly used for surge protection for AC.

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