I'm planning to build a regulated linear power supply like the one in this link:
Power Supply
(I may add another capacitor for the adj. line, as well as protection diodes).
However, I want to know if one major modification is feasible!
I will be using a 24v center-tapped transformer, ignoring the center tap when I need to provide 15-30V. What I want to know is if I can simply place a switch to select either the center tap or the full tap, thus being able to have a HIGH and LOW voltage mode to minimize the power dissipation over the LM338 when powering a load below 15V (and also make 5V @ 5A possible).
Will the resistor values intended to vary the output up to 30V be an issue?
And if this all is feasible, is there a simple way to have two LEDs indicating whether the supply is operating in HI or LO?
Power Supply
(I may add another capacitor for the adj. line, as well as protection diodes).
However, I want to know if one major modification is feasible!
I will be using a 24v center-tapped transformer, ignoring the center tap when I need to provide 15-30V. What I want to know is if I can simply place a switch to select either the center tap or the full tap, thus being able to have a HIGH and LOW voltage mode to minimize the power dissipation over the LM338 when powering a load below 15V (and also make 5V @ 5A possible).
Will the resistor values intended to vary the output up to 30V be an issue?
And if this all is feasible, is there a simple way to have two LEDs indicating whether the supply is operating in HI or LO?