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Simple and practical TV lightning prevention protection circ

2016-09-14 14:17  
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Simple and practical TV lightning prevention protection circuit
The application circuit of this device is as shown in the figure. When you are watching TV in the thunderstorm day, the thunder can damage the TV through two approaches: one is through the outdoor TV antenna; another is through the power line of TV. The former often damages the high frequency head, the latter often damages the power supply circuit of the line field output circuit. We can add the voltage dependent resistor on the outdoor antenna to prevent this consequence, the voltage dependent resistor needs to be connected with the ground. The application circuit connection method of the power protection part is as shown in figure 8.