S-curve using linear potentiometer without huge power drain
Sure, scale it down in current by a factor 100 and then use an opamp buffer to buffer the output voltage:







simulate this circuit &ndash; Schematic created using CircuitLab

This will give you the same voltage but at less power consumption.

Oh, you want greater precision ? Then why not do that this way, see circuit 2 or 3
Of course adding the opamp is optional. None of these circuits will draw large currents
(if you don't load it too much) so are safe regarding smoking potmeters ;-)

BTW circuit 2 is the most commonly used solution as it is the easiest to calculate the range of the output voltage for (in this case 1/3 * Vbat to 2/3 * Vbat).







simulate this circuit