| 摘要 |
A lightning surge protection circuit according to the present invention is a serial circuit of a surge absorber ( 1 ) and a diode ( 2 ), and a terminal of the surge absorber ( 1 ) corresponding to the cathode of a diode is connected to the cathode of the diode ( 2 ). The lightning surge protection circuit according to the present invention is used in such a way that a terminal of the surge absorber ( 1 ) corresponding to the anode of a diode is grounded, and the anode of the diode ( 2 ) is connected to a power supply line of a product such as an LNB or a SW-BOX. A varistor ( 6 ) may be used instead of the surge absorber ( 1 ), and a capacitor ( 4, 7 ) may be used instead of the diode ( 2 ).
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