iLoveJeeps
New Member
I have quite a few LM317T variable voltage regulators and lots of spare electronics parts. I.E. transistors "PNP and NPN", Mostly 2N3906 PNP's and 2N2222 NPN's, and a couple 2N3904's. My question is how can i build a voltage regulator that can put out 2 - 3 Amps at 12 volts with 25.5 volts going in.. Its for an arial photography company i'm starting up with my drone and my power source is a 6 cell 22.2 v 16,000 mah battery. Ive looked at schematics for such a circuit and ive learned that the more 3055's you use the more current the LM317T can put out.. Is there and equivalent transistor i can use such as the ones i've listed that can work instead? If not, then which can i use and can you show me the circuit diagram to build it. It has to be light weight because its for a 6 propeller drone that already weighs 10 pounds without the camera, pan/tilt mount and the 1000 mw 5.8 ghz video transmitter. Which is where I need the 12 volts and 3 amp current rated regulating circuit.. If i have to get different transistors thats fine,, but would like to use my current regulator. Here is the link of the current circuit i would like to build.. It's the third schematic down using 3 NPN transistors in parallel. http://www.reuk.co.uk/LM317-Adjustable-Power-Supply.htm Please keep in mind that i am an amatuer at dealing with electronics, but can read and build schematics.. And this is the first time i've ever posted in a forum. lol any help would be great.. Thanks guys/gals...