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Old 06-16-2016, 03:14 PM   #11
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I always thought the outlet/ USB combos were ac only. No dc required.

Maybe I'm wrong?
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Old 06-16-2016, 03:56 PM   #12
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Quote:
Originally Posted by norty1 View Post
I always thought the outlet/ USB combos were ac only. No dc required.

Maybe I'm wrong?
Norty1,

I haven't taken one apart, but since it is producing 5 ~ 7Vdc to charge batteries, it most likely has a single diode (Half wave rectifier and a couple of resistors to limit the Voltage & current. It is making it's own DC from the 120V ac.

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Old 06-16-2016, 04:35 PM   #13
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I thought the ones being installed now were kind of like this https://www.amazon.com/gp/product/B0...2CCSVQHHA7FWFW
well, except the ones I saw at the RV show were only 2 port models.


These are 12V DC input, and actually, the one linked does indicate a 40mA standby current draw, so it does have some minimal parasitic draw.


Hmmm, for $24 maybe that needs to go on my RV mods list. I am currently using a 2 port cigarette type adapter in the 12V receptacle on the entertainment centre.
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Old 06-16-2016, 05:28 PM   #14
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We just use the same chargers we use at home in the ac outlet. I priced those little boogers and decided they were to expensive. I can plug ours in anywhere.
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Old 06-16-2016, 08:04 PM   #15
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I use one of these...

Anker 60W/12A 6-Port USB Charger PowerPort 6

https://www.amazon.com/dp/B00P936188..._jW0yxb0Z2CJ7G

Smart charging on all ports, doesn't matter device amp requirements, and gives me whatever options I need to plug in to charge while only using one AC outlet.


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Old 06-19-2016, 02:54 PM   #16
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OK. After working on a mod on my 377 RLBH today, I can say UNEQUIVOCALLY, that my combination 12v/USB outlet in the bedroom is powered exclusively by 12v. The power just happens to come from 15a fuse #5 in my 12v fuse panel, which also controls the bedroom lights....

I was attempting to hardwire in a 12v wire for my weather alert radio, and I did a little "12v welding" when I slipped..........
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Old 06-20-2016, 05:24 PM   #17
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Here's a bit more info for any folks whose 12v plug is working fine, but the USB isn't working.....

It appears that the 12v plug is wired directly, but the USB is tapped into the 12v wires, using those squeeze clip type splices. (There must be resisters in the USB unit that reduce the voltage from the 12v to the 5.7 for USB.) The wire on the USB is small enough that the squeeze splice may or may not be making contact with the conductor.

I was wiring my weather radio into the same 12v circuit, and I must have jostled the wires enough that the USB stopped working. Had to take it apart again, and make a better connection with the USB leads.....
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