Bob Blick said:

Oops, somehow I read -0.3 volts. Spehro has the numbers right, other than
that my description stays the same.

 ;)

Cheers,

Bob


> Steve Kosmerchock said:
>> I need to convert a 0V to +5V DC signal to a +0.3V to +10V signal.
>>
>> Here comes the tricky part, When the signal is +5V the output needs to
>> be +0.3V. When the signal is 0V I need the output to be +10V.
>
> Steve,
>
> Use an opamp set up as an inverting amplifier with two resistors to set
> the gain.
>
> Your gain is -2.06, so the ratio of the resistors is 1 to 2.06
>
> The non-inverting input needs to be attached to a reference voltage of
> 3.268 volts, you can use a voltage divider to create it, or a
> potentiometer.
>
> That's calculated by taking the output when input is zero (10 volts) and
> dividing it by (1 - gain).
>
> Cheers,
>
> Bob
>
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