The MOSFET input diode is controlled by an electric field in the gate region, thus the input impedance is always extremely high because there is no forward biased diode to lower the input impedance.
While the main gate is open, the conditioned input signal pulses are passed through to the counting register, where they are tallied and then scaled for output by the display circuitry.
当主控门打开时,经过转换的输入信号脉冲通过它进入计数寄存器,并在此统计,然后通过显示电路输出。
3
When both the input conditioning and main-gate flip-flop are logically true, the main gate opens for a period of time that is determined by the timer base divider.