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TV Guard

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#voltage surge protection #safety capacitors #lightning protection #TV protection #modem protection #antenna input #voltage limiter #surge suppressor
TV Guard
TV Guard

Description: This is a straightforward solution designed to protect a television from voltage surges via the cable during lightning storms. It provides protection as long as the induced current remains within manageable levels. The circuit employs two safety capacitors to restrict the voltage entering the antenna input of the television. This configuration can also be applied to modem cables.

The circuit functions by utilizing two safety capacitors connected in series or parallel with the antenna input. When a voltage surge occurs, the capacitors momentarily absorb excess voltage, thereby preventing it from reaching the sensitive electronics of the television or modem. The selection of capacitor ratings is critical; they should be rated for higher voltages than the expected surge to ensure reliable protection.

In addition to capacitors, the circuit may benefit from the inclusion of a transient voltage suppression (TVS) diode. This component can provide an additional layer of protection by clamping voltage spikes to a safe level, further safeguarding the connected devices. The TVS diode should be placed in parallel with the input to the television or modem, allowing it to react instantaneously to voltage surges.

For optimal performance, it is essential to consider the placement of this protective circuit. It should be installed as close to the point of entry of the cable into the device as possible to minimize the length of unprotected cable. Furthermore, proper grounding techniques should be employed to ensure that any induced currents are safely diverted away from the television or modem.

This circuit can be a valuable addition to home entertainment systems, especially in areas prone to electrical storms. Regular maintenance checks should be performed to ensure that the capacitors and diodes remain functional and that the circuit continues to provide effective protection over time.Here is a simple solution to protect TV from voltage surge through cable during lightning. It gives protection, if the induced current is not too high. The circuit uses only two Safety capacitors to limit the voltage entering into the antenna input of the TV. This can be also used in Modem cables. The circuit.

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