Question

Second precision rectifier:

Research why this is better than the first configuration.

Answer 1

Precision half wave rectifier - Arectifier without op- Amb. only rectifies signal wit which is onder of volt ersing OP-Amp. ure order signal can also be rectified. This property is used biomedical application when human body potential is rectify. D2 when vin is positive cures No five sve hence Di s off Da -> ON

No-ov When win is negative coure) 10 Ctive) in tire) in velts RS nimmt No= vin) -RE) I RI If Ros= Rig Vo = ovinosa st

vo L 1350 7 Vim Precision full ware rectifier et vimit Volt When vin = tives DI -> ON, D2 -> OFF 12 No E - R vim = - vin No= - & -vin) = Nim when vin- zive Da -> ON Di - OFF vol = tive - vim a vol a volo R QR – 2 vim - volnavolo - avin. - 30. vo – svim

Novo vol. – R RR avo-zvonvono 30 = 2v0 Vo = 3 Vd voz - vin vim Xt Vo=vim vim

I som normal rectifier code can be & voltage drob across diode is more thouse 0-av so for low voltage rectification can c be possible but in precision rectifier , we are using op-Amp which gain is very high That's why voltage of uw can also be rectifield. That's why we need it.

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