Voltage Range Conversion

[Electrix]

A circuit is required to convert a voltage range of 100mV - 1V to 1V -5V
ie:at i/p:100mV --> o/p: 0V and
1V---->5V

Any ideas/suggestions ?

 

[Nigel Goodwin]

Give more details, that's far too vague and gives no indication of what you're trying to do!.

 

[Electrix]

Lets say we have a sensor giving out readings in the range of 100mV-1V.
I want to calibrate these such that 100mV should correspond to 0V and 1V should correspond to 5V. All the readings in between 100mV & 1V, likewise should be mapped.

 

[OutToLunch]

offset the input signal by 100mV and then put the offset signal into a gain stage of 5.56

 

[Electrix]

offset the input signal by 100mV and then put the offset signal into a gain stage of 5.56

That should do it, I think. Can you draw a schematic that does this. (offset it and amplify the resultant).

 

[Nigel Goodwin]

Check out opamps! - tailor made for a job like this!.

 

[Analog]

That should do it, I think. Can you draw a schematic that does this. (offset it and amplify the resultant).

A non-inverting adder with a potentiometer on one input leg will allow you to adjust the input voltage offset. With appropriate feedback resistor, you can also get the gain desired. Is that enough information?

 

[Hero999]

What are you trying to do?

It's possible you're doing it the hard/wrong way.

 

[Electrix]

Check out opamps! - tailor made for a job like this!.

OpAmps can definitely be a choice for such a circuit.Sorry, I've gone a bit rusty with my knowledge, its been quite a while and have lost touch ! Feels good to get back !!

 

[Electrix]

A non-inverting adder with a potentiometer on one input leg will allow you to adjust the input voltage offset. With appropriate feedback resistor, you can also get the gain desired. Is that enough information?

Thanks ! I'll try that out.

 

[Electrix]

What are you trying to do?

It's possible you're doing it the hard/wrong way.

I'm simply trying to find a solution to a problem, defined in the Third Post in this thread. The issue was of signal conversion/calibration.

 

[Sceadwian]

The reason people are confused about your request for information is because it's such a straight forward problem. Use an opamp with the specified gain. The input impedance, output impedance and signal frequency however decide what opamp you chose.

 

[Hero999]

That's another point, you haven't stated what bandwidth or input/output impedance you require.

 

[Electrix]

That's another point, you haven't stated what bandwidth or input/output impedance you require.

It's a DC Signal Voltage. The impedances are not worked out as yet. I've managed to build it anyway. Thanks all.