I am trying to do something like this. My load will be up to 3K ohms and I want to be able to drive up to 10mA current through it. Which would mean I would need a supply rail of +/- 35V to be comfortable. Looks like there are very few Op-Amps that can handle 70V R-R voltages. Is there a simpler way of doing this?
The load has be on the low side, it cannot be a high side / floating load.