modified 8 years ago

Single Supply Inverting AC amp

01:20:43

Op-Amp you select does not have to be rail-to-rail. Q point is centered at half the supply voltage. Also the output is AC coupled.

published 8 years ago

hurz

8 years ago

Rail2rail is not what you think it is. R2R just means the output can reach the rail voltage, and does not drop e.g. one Ube

npandolfi

8 years ago

Ah yes, there is also r2r input though...

hurz

8 years ago

There are so many more surprising facts .....

npandolfi

8 years ago

Please only useful comments, thanks. Vagueness doesn't help anyone.

hurz

8 years ago

And if the OpAmp you selected does support rail2rail it wont help and a 6V virtual ground as reference would be needed anyway. So rail2rail is in this context total nonsense! Got it?

npandolfi

8 years ago

You obviously aren't a native English speaker... "Does NOT have to be rail to rail" READ THE DESCRIPTION! Also I've built this circuit in >real life< and the fact that you say it needs a 6v reference means you don't understand basic op-amp theory. Please don't go commenting around, confusing people who can actually learn from this. This is the most common single supply AC coupled design, and if you have a problem with it, you can argue with the 50 year old industry.

hurz

8 years ago

You are in big trouble if you do not understand 6V is your virtual ground. I think you have missed a lot facts here. And this r2r thing turns into a very funny property. BTW, the OpAmp DOES NOT NEED TO BE PINK PAINTED! Keep up your stupid logic.

npandolfi

8 years ago

The Virtual Ground is OBVIOUSLY 6v. But no semiconductor references are needed. Nobody in industry calls a voltage divider a reference. Are you kidding me?

npandolfi

8 years ago

Learn English. Then learn common EE terminology. Then comment.

npandolfi

8 years ago

I'm done with you. Please don't comment on any more of my designs.

hurz

8 years ago

Its up to you, publish bullshit and get the comments you deserve!

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