Switching regulators are precisely for this. They do not waste excess
voltage, but convert one voltage to another, somewhat like a
transformer does for AC.
Car 12VDC power to 19VDC suitable for laptop charging
Hello
I would like to convert 12 VDC power supply in the cigerette lighter to 19V DC to be able to charge a laptop battery.
What is the best method to step up?
regards
Babu