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0-10[Vcc] or -10-10[Vcc] Source

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venix

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Hello everybody!
I need a schematic for a source that can provide 0-10[Vcc] or/and -10-10[Vcc] very precisely.The accuracy of the source must be at least 0.01[Vcc].I need this source to simulate sensors that have the output in this range.
Regards!
 

can you explain? not clear
what do you mean 0-10 vcc?
 

I think a voltage calibrator circuit is what venix is looking for.
Try here, I think this may be what you want.

**broken link removed**

Bob
 

    V

    venix

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Hi, u can use LM317 for your source: Vi ias about 15VDC, Vout is 0 to 10VDC depend on variable resistor on circuit.
 

    V

    venix

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The accuracy of the source must be at least 0.01V. Are you sure???

In my experience, LM317 produces voltage tolerance at least 0,05 Volt.

Maybe the article from DrBob13 will help you. But your source accuracy limit still hard to be realized.
 

    V

    venix

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The 10 mV accuracy for a 0 - 10 V calibrator is a usual value, it would be achieved by many general purpose calibrators, e g. a Keithley 2400 SourceMeter. Design of such an instrument respectively a fixed range basic circuit requires some knowledge of analog electronics anyway.

Obviously, a precision reference is necessary, also precision resistors and amplifiers. As many good DAC have an absolute error less than 1 LSB, a design based on a 12 - 16 bit DAC seems practicable.
 

    V

    venix

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Hello all!
DrBoB had right,what I mean is a voltage calibrator.
Thanks for your reply

Best regards!
Venix
 

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