Author Topic: Amp attenuator cct.  (Read 1089 times)

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Offline kvrestoTopic starter

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Amp attenuator cct.
« on: October 17, 2014, 05:18:04 am »
Hi.
I want to convert a bipolar +12V to -12V ac signal into a single ended 0V to 3V signal. I have been simulating in SPICE a general purpose amp for this example and I have settled on the design shown in the pic. What I don’t know is whether this configuration with the feedback set up as an attenuator is stable. Will this design work or is it doomed when I actually build the cct? Is there an amp which is best suited for this, or even another method, I’m still searching for the best method.


Cheers
k.v
 

Offline HalfSpace

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Re: Amp attenuator cct.
« Reply #1 on: October 19, 2014, 09:05:31 pm »
Hi kvresto,

Do you need to use an opamp if all you require is an attenuator with dc bias?

The LTspice simulation below may do what you want.

HalfSpace  :)
"He who asks a question is a fool for five minutes; he who does not ask a question remains a fool forever."
 

Offline LvW

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Re: Amp attenuator cct.
« Reply #2 on: October 20, 2014, 06:12:34 am »
https://www.eevblog.com/forum/projects/amp-attenuator/

kvresto - why did you ask this question again (see the above link)? Not happy with answers?
 


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