So, my suggestion (reply #2) is just a bridge too far then?
use 2 pcs IN4001 will give you ~3.4V output at current 80-100mA.
I've always been curious what would happen if you switched (for the constant voltage circuit, 1st one of the 3) the zener diode fora resistor/voltage divider? would the transistor hold the voltage? i'll try that out tomorrow.
It's the inside of an LM317. How on earth does anybody design something like that?
Vo R_L mA3.9 22K --3.77 300 12.63.68 59 61.33.63 40 903.77 - 3.63 = ? 0.14V
I made the circuit, two variations with resistors and one using a zener.