I have a problem in how to convert an incoming voltage that can range from +/- 3 volts I need an output of +/- 10 volts.
I looked at op amps and the supply rail is common to the output so would need to change polarity? Help please
I should also add that you will need +10 volts and -10volts on the op-amp rails(+V and -V in the diagram) so that it can swing the full range on the output
I think the OP ought to explain EXACTLY what he's trying to do, the original question is very vague - usually he's not asking what people think he is!.
Why rail to rail? - why not just use +/-12V supplies?. In my PIC analogue tutorial hardware I deliberately avoided the requirement for a rail to rail opamp, I don't think ANY opamp really does a good job of rail to rail.
A rail-to-rail opamp has an output voltage that is rail-to-rail only when its output doesn't supply any current. It is Cmos.
He said he wants to convert +/-3V to +/-10v, not amplify it.
Isn't this a power supply project? A power supply without any output current is useless.
He didn't say how much current is needed at +/-10V so the DC to DC converter might be easy or it might be a nightmare.
He also didn't say how much current is available at +/-3v to power the thing.
I have a gyro sensor that outputs 0 volts when stationary,as the gyro is turned it can output between 0 to +/- 3 depending on which way the gyro is turned negative voltage turned one way, positive voltage when turned the other way.
The output which tracks the input voltage swing needs to to follow the input but amplify is propotionally ie.
0 volts in 0 volts out.
3 volts in 10 volts out
and anywhere inbetween.
The input has a small current and the output only needs a small current output.