A circuit (140) is described. The circuit (140) includes first and second electronic switches (Q1, Q2), first and second excitation circuits (141, 142), and first and second inductors (L1, L2). The first and second electronic switches (Q1, Q2) are electrically coupled in series. The first and second excitation circuits (141, 142) are used for respectively controlling the first and second electronic switches (Q1, Q2) to be turned on and turned off and are configured to synchronously switch the first and second electronic switches. The first inductor (L1) is electrically coupled between the first excitation circuit (141) and the first electronic switch (Q1), for transmitting the switch control signal of the first excitation circuit to the first electronic switch. The second inductor (L2) is electrically coupled between the second excitation circuit (142) and the second electronic switch (Q2), for transmitting the switch control signal of the second excitation circuit to the second electronic switch.