Is this possible? - Electronic Circuits Projects Diagrams Free

strokedmaro · 3rd March 2008, 02:56 PM

Is it possible to use a variable voltage signal from 0-5vdc to produce a linear output of 12-0vdc? for example 0vdc in would be 12vdc out; 2.5vdc in would be 6vdc out and 5vdc would be 0vdc out?

**Nigel Goodwin** · 3rd March 2008, 03:03 PM

Yes, perfectly possible, and simple! - look up opamps!.

strokedmaro · 3rd March 2008, 03:30 PM

thanks..looks like a lot of reading ahead

strokedmaro · 3rd March 2008, 03:44 PM

question. These seem to be tied more to audio applications rather than power ones. After reading a little about the basics it seems that they amplify an incoming signal to produce a larger output. How would this work in my project if I input 0vdc and want to get 12vdc out? Can you tell me which type of opamp I should be looking for or give me a part number so I can get a data sheet and figure it out that way? THANKS AGAIN

**Nigel Goodwin** · 3rd March 2008, 03:52 PM

Quote:

Originally Posted by strokedmaro

question. These seem to be tied more to audio applications rather than power ones.

You never mentioned power, perhaps you might try giving us the requirements all at once, rather than a piece at a time?.

dknguyen · 3rd March 2008, 04:37 PM

An inverting amplifier with a gain of 12V/5V I think is the op-amp circuit. If it was a non-inverting amplifier you would get 0Vout for 0Vin and 12Vout for 5V in. The op-amp you need depends on the frequency response you want as well as the power and a bunch of other things.

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3rd March 2008, 02:56 PM	(permalink)
strokedmaro	Is this possible? Is it possible to use a variable voltage signal from 0-5vdc to produce a linear output of 12-0vdc? for example 0vdc in would be 12vdc out; 2.5vdc in would be 6vdc out and 5vdc would be 0vdc out?

3rd March 2008, 03:03 PM	(permalink)
Nigel Goodwin	Yes, perfectly possible, and simple! - look up opamps!. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

3rd March 2008, 03:30 PM	(permalink)
strokedmaro	thanks..looks like a lot of reading ahead

3rd March 2008, 03:44 PM	(permalink)
strokedmaro	question. These seem to be tied more to audio applications rather than power ones. After reading a little about the basics it seems that they amplify an incoming signal to produce a larger output. How would this work in my project if I input 0vdc and want to get 12vdc out? Can you tell me which type of opamp I should be looking for or give me a part number so I can get a data sheet and figure it out that way? THANKS AGAIN

3rd March 2008, 04:37 PM	(permalink)
dknguyen	An inverting amplifier with a gain of 12V/5V I think is the op-amp circuit. If it was a non-inverting amplifier you would get 0Vout for 0Vin and 12Vout for 5V in. The op-amp you need depends on the frequency response you want as well as the power and a bunch of other things.