Stepdown from 19V to 12V using 3 IC for reduce the heat output? Answered
I want stepdown my charger laptop from 19V to 12V but I read from https://www.instructables.com/answers/19v-to-12v-without-current-drop/ they said IC produce excessive heat if I connect it directly,
Then does by doing 3 stages of reduction, can reduce the heat output of the IC?
For example I use 7818 > 7815 > 7812 for 3 stages of reduction.