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Old 01-07-2009, 02:08 PM   #1
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Default Power supplies.

Quick question, why do most people have a 12V power supply plugged into the mains and chargers plugged into them?
Why not just make the chargers plug straight into the mains?
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Old 01-07-2009, 02:14 PM   #2
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Good question..

I have always wondered why the top of the line chargers are all DC.
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Old 01-07-2009, 02:17 PM   #3
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It's handy when running off a car battery.

That's all I can think of.
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Old 01-07-2009, 02:37 PM   #4
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1. Cheaper to make.
2. Keeps a heat source away from the charger (especially important in discharging).
3. Multiple Chargers off of a single power supply.
4. Less chance of failure for the charger.
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Old 01-07-2009, 03:37 PM   #5
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It takes a power supply capable high amperage to run most battery chargers.

Just think of a dual battery charger charging 2 batteries at 10 amps.

The chargers would be huge just to house the power supply.

I have a Bull Dog 30 amp power supply. I can run all kinds of stuff with it.
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