Voltage Range Conversion - Electronic Circuits Projects Diagrams Free

Electrix · 18th December 2006, 05:10 PM

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** · 18th December 2006, 05:12 PM

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

Electrix · 18th December 2006, 05:18 PM

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 · 18th December 2006, 05:32 PM

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

Electrix · 18th December 2006, 05:38 PM

Quote:

Originally Posted by OutToLunch

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** · 18th December 2006, 06:03 PM

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

Analog · 18th December 2006, 07:21 PM

Quote:

Originally Posted by Electrix

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 · 18th December 2006, 07:40 PM

What are you trying to do?

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

Electrix · 19th December 2006, 01:57 AM

Quote:

Originally Posted by Nigel Goodwin

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 · 19th December 2006, 01:58 AM

Quote:

Originally Posted by Analog

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 · 19th December 2006, 02:02 AM

Quote:

Originally Posted by Hero999

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 · 19th December 2006, 02:19 AM

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 · 19th December 2006, 10:31 AM

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

Electrix · 19th December 2006, 05:15 PM

Quote:

Originally Posted by Hero999

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.

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18th December 2006, 05:10 PM	(permalink)
Electrix	Voltage Range Conversion 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 ?

18th December 2006, 05:12 PM	(permalink)
Nigel Goodwin	Give more details, that's far too vague and gives no indication of what you're trying to do!. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

18th December 2006, 05:18 PM	(permalink)
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.

18th December 2006, 05:32 PM	(permalink)
OutToLunch	offset the input signal by 100mV and then put the offset signal into a gain stage of 5.56

18th December 2006, 06:03 PM	(permalink)
Nigel Goodwin	Check out opamps! - tailor made for a job like this!. __________________ PIC programmer software, and PIC Tutorials at: http://www.winpicprog.co.uk

18th December 2006, 07:40 PM	(permalink)
Hero999	What are you trying to do? It's possible you're doing it the hard/wrong way. __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez

19th December 2006, 02:19 AM	(permalink)
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. __________________ "Because I be what I be. I would tell you what you want to know if I could, mum, but I be a cat, and no cat anywhere ever gave anyone a straight answer, har har."

19th December 2006, 10:31 AM	(permalink)
Hero999	That's another point, you haven't stated what bandwidth or input/output impedance you require. __________________ I also post at the following sites: http://www.stop-microsoft.org http://www.heated-debates.com Screen name: Aloone_Jonez