Hi,
I'm trying to go through this with different values. I need a base voltage from 10-15 volts in and 0-2.5 volts out to feed an a/d, with a 15v single rail supply. But from the first section of the calculations i'm getting a gain of -0.5, do i just drop the - when calculating a value of 10K for R1 when using R2 as 20k as in your example. Also do i set Vd to 10v ?
Many thanks
Mr Smiley
Added Link to spawning thread: http://forum.allaboutcircuits.com/showthread.php?t=36896 (hgmjr)
I'm trying to go through this with different values. I need a base voltage from 10-15 volts in and 0-2.5 volts out to feed an a/d, with a 15v single rail supply. But from the first section of the calculations i'm getting a gain of -0.5, do i just drop the - when calculating a value of 10K for R1 when using R2 as 20k as in your example. Also do i set Vd to 10v ?
Many thanks
Mr Smiley
Added Link to spawning thread: http://forum.allaboutcircuits.com/showthread.php?t=36896 (hgmjr)
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