Voltage Increaser?

[Joat]

Is there a way to make a light weight voltage increaser? I do not want a transformer unless it is very light weight
What I am trying to do is use my 2s 1500's and get the more voltage than the 7.4 +/-. I dont think I want to run near the 3s 11.1v but if I could get near 10.v I would be happy

[Mr DIY]

What are you trying to do tlyee63. The answer to your question lies in what output current you are trying to make avialable.

Brian

[Joat]

I'm trying to increase the output voltage of my 2s pack-7.4 volts-max current would be 30 amps which is well above the 12 amp normal current discharge of the pack -burst is 20 amps, I dont have the room without major modification to runs a 3s pack of 1320 or larger lipos.plus I dont want to spend the dough either-$50 a pack is not cheap.

[Mr DIY]

So what you are saying is that you want to power a motor from the booster.

Forget it ... no can do. Far simpler to do modification for extra cell. A voltage booster would also cost far more than the new lipo pack anyway .. and be heavier than an additional cell.

Brian

[Mr.RC-CAM]

To deliver 30 Amps @ 11V: Assuming 90% efficiency, that would draw nearly 50 amps from a 2-cell LiPO pack. Blame the conservation of energy.

RC-CAM

[Comatose]

Parts cost on this is gonna be about $50, and the weight I'd guesstimate at three ounces. If you can't carry the size of an extra cell, there's no way you're going to be able to carry the ~10 large capacitors you'll need for a straight boost converter. Something (high frequency)transformer based would be better, but still gonna be really heavy. This is coming from a guy who really likes DC-DC conversion too.

Also, unless you get a PCB made with proper ground planes and short trace runs, there will be some non-trivial interference issues to deal with.

[Joat]

I would have the room to run something,it's that where the batt's go there is not a lot of room-up to 8 aaa I think,in the fuselage there's is room to put 2 3s packs if I rearrange the electronics,but this wont give me easy axcess that's part of the reason I dont run 3s ,I think I might be able to run 3s if there where small but then I would lose the amps, I just wondering if there was something simple and cheap,but if it does cost some as long as it would not create any probs then I might have a go!

[clipclop]

tlyee63,
if you existing 2cell pack cant deliver the required current at there rated voltage then there is no way they will support even the same current at higher voltage Ohms Law says so .

[Joat]

it's not current I am worried about I want higher voltage,as long as I can still get 12 amps-1500's 8c's,then that's not a consideration