Hi...
i want to use an op-amp as a linear inverter for 12V Ac.
an inverter works in form om 0-1 for DC. Pl z tell me that either it works for AC inverting or not.

 

Hello,

Can you post a drawing of what you have in mind?
Do you want to change the phase of an AC signal with 180 ° ?

Bertus

 

Hi
Yeah i want to reverse the phase 180°. the schematic is attached.View attachment Doc1.doc

 

Hello,

Take a look at this page of the eBook:
http://www.allaboutcircuits.com/vol_3/chpt_8/5.html

Bertus

 

hi,
I have already tried it but nothing is +ive plz suggest any other option i m still waiting....

 

That 300 volt signal might be a bit above a level any op amp can handle. You need to use a transformer to drop the voltage to something reasonable.

What is the purpose of the the circuit? Inverting those excursions appears to undo the rectification.

 

I think you are looking for something more like the attached circuit.

If you are dealing with mains power for an input, you must use an isolation transformer, otherwise it won't be safe.

 

Hi
Sir, as u can see from the schematic i have reduced this Ac signal to 13V ac by using potential devider. as i have already shown the waveforms i got on CRO i want to reverse Vr2 by 180°. Instead of op-amp is there any other solution then plz tell me about that......

 

Hi
Sir, as u can see from the schematic i have reduced this Ac signal to 13V ac by using potential devider. as i have already shown the waveforms i got on CRO i want to reverse Vr2 by 180°. Instead of op-amp is there any other solution then plz tell me about that......

Did you even look at my suggested schematic?

 

hi,
Sir u r using an isolation transformer, which transformer i have is 25V to 25V so that i have to reduce that voltage to that level.

 

hi
Bertus sir, lets start with the yesterday's problem how to invert the phase of an AC signal by 180° using op-amp.

 

hi
Bertus sir, lets start with the yesterday's problem how to invert the phase of an AC signal by 180° using op-amp.