| 摘要 |
A surge protection circuit comprises a bridgeless booster sub-circuit and a surge protection sub-circuit. The bridgeless booster sub-circuit comprises a first connecting end and a second connecting end of an alternating current power source, a first inductor (L1), a second inductor (L2), a first switching tube (VT1) with a damping diode, a second switching tube (VT2) with a damping diode, a capacitor (C1), a fifth diode (D5), and a sixth diode (D6). The surge protection sub-circuit comprises a first connecting end and a second connecting end of an alternating current power source, a first diode (D1), a second diode (D2), a third transistor (D3), a fourth transistor (D4), and a surge buffer device. The circuit uses a surge buffer device to absorb a surge current, and the surge buffer device is not in a main topology circuit. |
