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TV lightning protection circuit

2014-11-19 23:16  
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TV lightning protection circuit
The application circuit of this set is shown in the picture. Watching TV on in thunderstorms, the thunderbolt can scurry into TV and damage it through two ways; one is through outdoor television antenna; the other is through TV power line. The former often damages radio-frequency head, the latter often damages TV power supply circuit and line-field output circuit. Adding voltage dependent resistor on outdoor antenna can avoidthe consequence, and itrequires voltage dependent resistor MY to beconnected with ground directly. Protective power supply part application circuit's connectioncan be seen in the picture. They general protect induced lightning, if it meets the direct lightening, because of thedirect lightening's huge current and extreme high voltage, voltage dependent resistor cannot do anything about it, so we should place lightning conductor around outdoor antenna, the position of outdoor antenna should bein the protected areas.