High-voltage lightning-proof surge suppression circuit, device and power adapter

The invention is applicable to the technical field of surge protectors, and provides a high-voltage lightning-proof surge suppression circuit, a device and a power adapter, comprising a varistor, a discharge tube, a high-voltage capacitor, an inductance and a resistor. One end of the varistor is connected with a fire wire or a neutral wire, and the other end is grounded through the discharge tube.The high-voltage capacitor is connected in parallel at both ends of the varistor, and the inductance and the resistor are connected in series in parallel at both ends of the discharge tube. The invention can be used under the condition of withstanding voltage requirement of 1500VAC, and can discharge discharge surge current when surge peak voltage is 1600V, and residual voltage is lower than 1.3KV; It can also be used under the condition of withstand voltage requirement of 3000VAC, and discharge surge current can be discharged when surge peak voltage is 3600V, and residual voltage is lower than 3KV. It can also be us