Can a buck dc-dc converter like this http://www.ebay.com/itm/200962898162?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
output more amps then go into the input
example>> if you have a constant current supply of 1amp and 18v that's 18 watts if I used the buck converter and regulated it down to 9v would I get a output current capacity of 2amps or so and keep the 18watts of power I started with
I ask this because I wont to regulate a 18v solar panel down to 4.2v and with a solar panel even when shorted out the amps don't increase that much it would be nice to keep as much of the watts as possible
output more amps then go into the input
example>> if you have a constant current supply of 1amp and 18v that's 18 watts if I used the buck converter and regulated it down to 9v would I get a output current capacity of 2amps or so and keep the 18watts of power I started with
I ask this because I wont to regulate a 18v solar panel down to 4.2v and with a solar panel even when shorted out the amps don't increase that much it would be nice to keep as much of the watts as possible
