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Power bank Can I use a USB connector in 115 volt to recharge.

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Not sure what you are trying to do, but it sounds dangerous.

USB uses 1.5v DC and needs a transformer (power adapter) of some sort to convert the 110 AC to 1.5DC.

The other point to note is AMPs. The converter needs to have enough AMPs to charge the connected Device. Check the manual for the device to see which converter would be suitable.

Generic chargers can be purchased as most electronics stores and even walmart.

Posted on Feb 11, 2014

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User guide for Craig portable power bank model # cma3121a


Craig Electronics Inc
Portable Power Bank with Dual USB Charging Port (3400mAh) CMA3121a Features & Specs Best Replica Watches
  • Quickly Recharge any USB Powered Device such as Tablet, Smartphone and iPad
  • Stylish blue LED power indicator
  • LED light indicates Battery level
  • Built-in TWO Full size USB ports for any device charging via USB port simultaneously
  • Charges Two mobile devices at the same time
  • Scratch resistant UV coating
  • 3400mAh, One Max. 2.1A Output, One 1A Output
  • Available in Colors
ASME B16.5 Accessories Included •Micro USB to Full Size USB Cable
•Mini USB to Full Size USB Cable

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I have 115 v at the bulb receptacle but the bulb doesn't light up...whats the problem its a rab ff150 hps fixture


Does the bulb work in a different fixture? Sometimes the base of the bulb does not make contact with the terminal inside the fixture. unplug the fixture and then see if you can bend the center "not" connector up a little.

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1 Answer

Nexxtech power bank, how do I charge it


On the side where it says IN, is a micro USB connector. Put in the connector from the cable that came with the power bank, and put the other end of the USB cable in an external charger, or a PC USB socket of which you are sure it delivers 5V. You should see the bleu lights on the IN side flicker, and one by one they start burning continuously. When all 4 burn continuous, th bank is full. Discharge goes on the other side and you have to press the button, to start the charge cycle.
Perhaps you also should see what is on Youtube about the power bank :

Nexxtech USB Power Bank Quick Look

Nov 02, 2014 | Televison & Video

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Olympus vg 170


To make it possible, to point out where the problem is, you could try some rings.
Try to charge the camera with an external power supply. If you have it, the F-2AC from Olympus.
If that also does not charge, you could try to replace the USB cable.
But if the camera starts charging, you have to look for the USB connector in the computer. Be aware, in some computers the power, delivered from a USB connector, should be capable of giving 5 volt and 500 mA. Sometimes internally the computer is not correct wired, and won't give the 5 volt at all. Special when you hav build the computer yourself, you can check inside the computer. BUT ONLY when is sure the camera can charge via an external USB charger.

Then you could check if nothing is wrong in the camera. All contacts, on battery and in the camera, should be clean and shiny. You could clean contacts with a dry cloth. Never use sharp tools.
Also check the USB connector on the camera, if no debris is in the connector, or no contact is bent or has corrosion on it.

Success

Mar 04, 2014 | Cameras

2 Answers

Sony walkman NWZ-S754 Recharge is through computer - but can I recharge it via mains or in car.


Yes you can charge your player through main. All you need is a converter which connects to the usb cable to the plug. They are available in the market so you will need to look for it. Or you may find it at any electronic store.

Jan 20, 2011 | Sony Walkman Video NWZA818 MP3 Player

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I'd like to know how to change a 115/230 volt pool pump motor to run on 115 volts after I've already change to internal possition to 115 volts


IF YOU SEE ON THE LABEL ON THE MOTOR HOW TO CHANGE FROM HI - LO VOLTS . THATS ALL YA GOT TO DO ..THE WIRES HOOK UP NORMALY

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How do i tell when the inverter is charged?


Question does not seem to match this inverters capability.

INFO:
This Power Inverter converts vehicle’s 12-volt DC power into household 115-volt AC power. AC and USB outlets power and/or recharge personal electronics.

We have owned one of these Power inverters for over a year now and have run a great deal with it, from TV to drill press PC and any thing that was small and that could run from my car. Very nice product.

SET UP: Connect wires. ensure correct polarity, push button on top. Plug in 110 volt appliance.

Hope this tip was of some use.

R/
David

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For use during an extended power outage, where of course you wouldn't be able to recharge the battery after it drained initially, I'm wondering if anyone has tried using a 12 volt lead acid rechargeable...


You simply need a DC - AC Inverter, these can be obtained from somewhere like Radio Shack, or the like, pretty cheaply. These convert 12V DC into 115/120V AC (Some are 24V - 115/120 V) for use with your household appliances. You can get them from 100 Watts to over 1 kilowatt (!000 Watts) They can be used on almost anything at all, except things with big motors in them. Then you can simply plug the AC adapter into the inverter and you are good to go. not having to worry if your laptop is getting correct power.
Often the DC input into a laptop is between 14 Volts DC to 22 Volts DC and a high current too, up to 5 Amps. So the inverter is your best option.
Anyway you would need to use at least TWO 12 Volt batteries and then you would have to make it the exact voltage the laptop needed.. if it was say 19V then you are still going to have to find a way to drop the 24 V to 19 V, anyway so.....

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My Codegen Switching Power Supply 350W Model 300Xi Atx2 o3 (P4) is smoking when I turn on my PC


Using 115 volt or 208 volt switch?Found on back of supply
Is the fan clog with dirt and is it turning?

Check your wiring as some supplys can be wired for 115 volt or 208 volt.you want 115 volt.

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