If the power supply voltage decreases, the state of the select signal is changed from a logic high to a logic low.
如果电源电压减小，则选择信号的状态从逻辑高改变为逻辑低。
2
By using this kind of shielding effects, the electric current density distribution can be improved, the back-corona can be reduced and the high voltage and low current state can be obtained.
Even though the device (DUT) is rapidly varying from standby mode (low current) to the RF transmit state (high current), they are also capable of providing stable voltage output.