《电路》（英文版）3-3 Voltage follower(跟随器)(or isolator隔离器)

s3-3 Voltage follower(跟随器)( or isolator隔离器) The voltage follower is a circuit in which the output is identical to the input 19x=b D1 D1 ∴U2=U1,0r =1 The controlled-source representation of the voltage follower

§3-3 Voltage follower（跟随器） (or isolator隔离器) The voltage follower is a circuit in which the output is identical to the input. 2 =1 , 1 , 1 2 2 1 1 2  = = = =         or x x The controlled-source representation of the voltage follower: − +  1 − + − +  1  2  x − +  1  • − +  2 + + −

The application of the voltage follower R1 R R,+ r R,∥/R L DRI=D U,≠D R1+R2∥R 足1 2 R2 R U R 2 R+r

The application of the voltage follower R o R R R L     1 2 2 2 1 + = = = 1 1 2 2 1 1 2 2 1        + = = + = o L L R o R R R R R R R R L // //

Cascade(级联) of oP-AMP circuits 2 1k 十 U,=2U k -4D

Cascade(级联）of OP-AMP circuits  2 = 21 − = − = − + 1 3 2 4 2   