What about friends of the forum, I have this inconvient: I have a charger that gives output voltage of 30v / 0.4A and I need only 19v. What I can do in this case, I heard that you could connect a LM7818, as an option, but I'm not sure if it would work. I await your answers. Thank you.

hello wencho if you can because according to the datasheet says that it withstands a pole input 33 volt and you would output the 18 volts with a current of 1.5 ampers with this is what ahy to have a little care since ahy to take into account what you are to feed with this to saver the consumption in amperes since I think can warm a lot put a good teller I hope you cirva ...