I need to keep an opamp derived voltage limited to between 1 and 5 volts. The limits are a bit loose. So a swing to 0.85 volts or up to 6.0 volts is fine. I drew this up with opamps driving diodes at the correct voltages. But the opamps seemed like over kill. So I=92m thinking of using a three terminal adjustable voltage regulator. I then had the brilliant (or stupid) idea of using the maximum output voltage of the opamp as the upper limit. The opamps are powered from +/- 15V. I=92ll resistor divide the output to keep everything in the right range.
I stuck a few opamps in and they all clipped at same level. (with the same load and supply voltage.) 13.8 volts.
So something like this,
|\ | >-330-+----1k--+---out |/ D | ^ 1k | | +2.6V---+ GND
Is using the max. output voltage of the opamp in this way a bad idea? (There will be some variation in the supply voltage, but not enough to mess things up.)
The 2.6 volts will come from a LM317. (I=92m not sure the 2.6 is the right number...)
Thanks, George H.