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HelicopterMain Discussion › Are there any advantages to parallel power supplies?
03-12-2015 07:19 AM  3 years agoPost 21
McKrackin

rrProfessor

Lucasville,Ohio

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They have isolated outputs but I'd be afraid of fluctuation if one supply was being tapped by a second charger.

I think I'd prefer buying another big supply instead of buying a smaller one for the smaller charger.

I actually already have a 350W supply I could use for the smaller one...forgot about that.lol...I'm so tired.

I literally never use the word literally right.

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03-12-2015 07:27 AM  3 years agoPost 22
EEngineer

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TX

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Think it over....

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03-12-2015 01:39 PM  3 years agoPost 23
rcnut

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Rockford, Illinois

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McKrackin,

The solution to your problem isn't that complicated.

For me...I bought two HP 1200af server power supplies, isolated the chassis ground from the output. I soldered the plus and minus wires to the power output strips on the supplies, and then soldered those ends to banana jacks. 2 reds and 2 blacks for each supply. That gives me 4 red jacks and 4 black jacks.

I made a short jumper wire to connect both power supplies together in series, for 24v. So with that...I can run two chargers at 24v...or I can run one charger at 24v and 2 chargers at 12v...or...I can run 4 chargers at 12v.

The output of each power supply is:

@ 120Vac input, output = 12Vdc @ 75amps
@ 220Vac input, output = 12Vdc @ 100amps

Hope this helps some!

Team Miniature Aircraft
"I love the smell of Nitro in the morning!"
...Citizen 654!

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03-12-2015 01:41 PM  3 years agoPost 24
McKrackin

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Lucasville,Ohio

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That would mean buying two more power supplies???

I literally never use the word literally right.

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03-12-2015 01:44 PM  3 years agoPost 25
McKrackin

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Lucasville,Ohio

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And I don't understand a word of that past two power supplies.lol...

I literally never use the word literally right.

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03-12-2015 02:04 PM  3 years agoPost 26
ssmith512

rrKey Veteran

Indianapolis, IN USA

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I think I'd prefer buying another big supply instead of buying a smaller one for the smaller charger.
This is what I would do, especically since you already have a power supply for the "smaller" batteries.

Buying another power supply for the "bigger" batteries requires less thought, less chance for a screw up, less chance of "THE BAD" happening.

When charging batteries, K.I.S.S is always the best course of action (IMO)

Steve

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03-12-2015 03:36 PM  3 years agoPost 27
rcnut

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Rockford, Illinois

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HP1200AF is the brand of power suppy that I bought.

You can connect both supplies to the same 115Vac outlet, but you need to make sure (or have someone check for you) the 12Vdc output (the negative wire, black) is not connected to the AC ground wire on the AC plug.

Power supplies have what they call chassis ground. This means the ground plug of the plug that goes into the wall outlet is connected to the chassis of the power supply. So when you grab that power supply, you don't get zapped/shocked.

And some of those power supplies have an "isolated" output. Meaning the output black wire/negative wire is separate/isolated from the chassis ground.

Other supplies, the output negative wire is connected (inside the power supply) to the chassis and the ground wire in the plug. Now with this type of power supply, if you connect two of the same supplies together in series, the second supply will become shorted. Its a long story, one that I would need to show you, then it would become clear.

What I did to the supplies I bought, I opened both, removed the plug ground from the chassis, and then used tham as I needed/wanted. I designed my charging station that way.

However, what ssmith512 stated;
Buying another power supply for the "bigger" batteries requires less thought, less chance for a screw up, less chance of "THE BAD" happening...When charging batteries, K.I.S.S is always the best course of action (IMO)
K.I.S.S. Keep It Simply Silly (the second "S" is actually the word...Stupid)

Team Miniature Aircraft
"I love the smell of Nitro in the morning!"
...Citizen 654!

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03-12-2015 08:17 PM  3 years agoPost 28
BobOD

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New York- USA

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Oh for Pete's sake, just go get a Nitro and stop messing with toys.

Team POP Secret

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03-12-2015 08:42 PM  3 years agoPost 29
no1gsxrman

rrNovice

Baltimore, Md

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powersupply
http://www.rchelination.com/setting...996093750000000

Put the woman and children to bed it's time to go fly!

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03-12-2015 08:44 PM  3 years agoPost 30
ssmith512

rrKey Veteran

Indianapolis, IN USA

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Oh for Pete's sake, just go get a Nitro and stop messing with toys.

Steve

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03-13-2015 08:50 PM  3 years agoPost 31
BobOD

rrElite Veteran

New York- USA

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I'm glad McKrackin decided to ignore that one. I've been expecting him to drop a hammer on me for it.

Team POP Secret

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03-13-2015 09:10 PM  3 years agoPost 32
McKrackin

rrProfessor

Lucasville,Ohio

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You know I got nothing against nitro

I literally never use the word literally right.

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03-20-2015 12:14 AM  3 years agoPost 33
McKrackin

rrProfessor

Lucasville,Ohio

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Just bought a Skyrc eFuel 1200W 60A 12-24V supply.

Should be good to go now

I literally never use the word literally right.

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03-20-2015 04:46 AM  3 years agoPost 34
EEngineer

rrProfessor

TX

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Just one?...Or two?.....

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HelicopterMain Discussion › Are there any advantages to parallel power supplies?
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