Regarding inverting my analog signal.

Thread Starter

Dinesh_rd7

Joined Jan 26, 2020
40
Hi all,
I am Dinesh. I am in need of a clearance that which amplifier i should use to invert my analog signal.

I have an output from my pressure transducer that range between 0 t0 5v when the pressure is 0 to -115Kpa, but i need an output of 5 to 0v when the pressure is 0 to -115Kpa. could you suggest a method to invert the signal.

whether can i use any amplifiers.
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ericgibbs

Joined Jan 29, 2010
9,575
hi Dinesh,
Welcome to AAC.
The signal inversion is possible if you use an inverting OPA with a Gain of 1.
The OPA will have to be a rail to rail output voltage swing,or using a dual supply of +/-6V would work OK.
E
Update:
Using dual +/-6V supplies will ensure a +4.5V to 0V output.
 

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Thread Starter

Dinesh_rd7

Joined Jan 26, 2020
40
hi Dinesh,
Welcome to AAC.
The signal inversion is possible if you use an inverting OPA with a Gain of 1.
The OPA will have to be a rail to rail output voltage swing,or using a dual supply of +/-6V would work OK.
E
Update:
Using dual +/-6V supplies will ensure a +4.5V to 0V output.
Thank you!!!
 

crutschow

Joined Mar 14, 2008
24,410
The 741 needs the supply voltages to be about 3V greater than the output peak voltages, so would require at least a plus 8V and minus 3V supply to generate a 0 to 5V output.
Look at the 741 data sheet output voltages versus the supply voltages.

Have you downloaded and installed LTspice?
What help do you need?
 

Thread Starter

Dinesh_rd7

Joined Jan 26, 2020
40
Yes ihave installed it, i cant able to simulate the schematics.

can you help to select a op amp for this spec

supply voltage-5v
it should invert my signal from 0 - 4.5v to 4.5 - 0v
 
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