I am not very familiar with electronics, but I arrived here via tutorials on converting a computer PSU to make a power supply for LiPo battery chargers.
I have an old laptop pwr supply I would like to use for the same purpose and I though it would be fun to build this myself and it would allow me to learn something new.
My charger accepts up to 18v DC, and charges up to 5A.
My power supply is rated at 20v and 9A.
I would like to drop the voltage down between 16-18v. From what I have been reading (if I have been understanding it correctly) my problem would be the a large amount of heat generated from dropping down 2-4 volts.
I think that the LM 338 may work for my application, but I am at a loss as to the rest of the components for the circuit.
Any help would be appreciated and these forums have been giving me ideas for other projects.
Thanks
R71d
I have an old laptop pwr supply I would like to use for the same purpose and I though it would be fun to build this myself and it would allow me to learn something new.
My charger accepts up to 18v DC, and charges up to 5A.
My power supply is rated at 20v and 9A.
I would like to drop the voltage down between 16-18v. From what I have been reading (if I have been understanding it correctly) my problem would be the a large amount of heat generated from dropping down 2-4 volts.
I think that the LM 338 may work for my application, but I am at a loss as to the rest of the components for the circuit.
Any help would be appreciated and these forums have been giving me ideas for other projects.
Thanks
R71d