Vout = 1.25 V * (1 + R2 / R1 ) + Iadjj * R2
so if R1 = 1 and R2 = 2Vout = 3.75Vignoring Iajj because so small
R1 = 100 and R2 = 200Vout = 375V
Code: [Select]ignoring Iajj because so small
ignoring Iajj because so small
ignore Iajj*R2 'cos so small[code]R1 = 100 and R2 = 200Vout = 3.75V
I need about 3.7 so 3.75 will do I guess, will I really have to find such small resistors?
Another (perhaps nutty) idea occurred. I've got a spare 7805 5v regulator. What if I dropped 12v down in two stages 12 -> 5 then 5 -> 3.75 volts?