| 摘要 |
A surge protection circuit comprises a bridgeless boost sub-circuit and a surge protection sub-circuit. Wherein, the bridgeless boost sub-circuit comprises a first connection end and a second connection end of an alternating current power source, an inductor 1, an inductor 2, a switching tube 1 with a damping diode, a switching tube 2 with a damping diode, a capacitor 1, a diode 5, and a diode 6. The surge protection sub-circuit comprises a first connection end and a second connection end of an alternating current power source, a diode 1, a diode 2, a transistor 3, a transistor 4, and a surge buffer device. The embodiment of the present invention provides a new solution for the surge protection, wherein, a surge buffer device is used to absorb a surge current, and the surge buffer device is not in a main topology circuit. |
