二、工作原理 CO=2Vcc/3 Ycc/3 05 1 ◆若：CO端悬空 *A1反相输入端 inverting input GND 电位=C0=2Vcc/3 *A2同相输入端(noninverting)的电位=Vcc/3 The inverting input of comparator A is held at 2/3Vcc. The noninverting input of comparator A2 is held at 1/3Vcc. R S Q Q   + C1 C2 VCC TH CO TR D T vo RD 8 7 6 4 5 3 2 1 R R R GND 1 vC1 vC1 + 二、工作原理  A1 反相输入端 ( inverting input ) 电位=CO=2VCC /3 CO=2VCC /3 VCC /3  A2 同相输入端( noninverting )的电位=VCC /3 The inverting input of comparator A1 is held at 2/3VCC . The noninverting input of comparator A2 is held at 1/3VCC . ◆若: CO端悬空