Hi
I'm a little confused how the formula works. My answers are completely wrong. I'm trying to make a 1 - 15v PSU. I'm using a power brick from an old laptop. Capable of 90w of power at 19v.
According to the ds I use the following
1.25v (1+R2/R1) + I(ADJ) * R2
My math is very rusty lol. Please show your working out.
I'm a little confused how the formula works. My answers are completely wrong. I'm trying to make a 1 - 15v PSU. I'm using a power brick from an old laptop. Capable of 90w of power at 19v.
According to the ds I use the following
1.25v (1+R2/R1) + I(ADJ) * R2
My math is very rusty lol. Please show your working out.