5v charger

rugbyken

rugbyken

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after all the excellent help with fabricating a 12v regulated feed for the new huawei cube ( thanks again everyone). at home we have a great weather station/clock/ radio that i would love to take away with us it has a 5v feed is there a way of purchasing/adapting. 12 volt feed to this ?

image.jpg
 
rugbyken said:
hi steve i have an 12v multi adaptor with a 5v usb port , if i could find a cable with the right adaptor on it would be perfect,
Click to expand...
you might struggle with that. the Mains Adapter quotes the output as 2500mA (2.5A) at the DC voltage. The typical USB Output is either 1A or occasionally 2.1A.

These are very neat little 12V to 5V Converters - https://amzn.to/2XpAScz

The one in the link has bare wires on the 5V output. You can get ones with ready-made USB connections as well but you don't need one for your purpose.
 
getting the correct jackplug is the biggest problem i can foresee there are so many different ones and identifying it is first step
 
rugbyken said:
getting the correct jackplug is the biggest problem i can foresee there are so many different ones and identifying it is first step
Click to expand...
The approach I took when I adapted my Amazon Echo to work on 12V instead of 240V is the following:
  1. Cut lead between 240V adapter and jackplug
  2. Fit a connector on each end of the cut wire (so they can be reconnected again). I used these - https://amzn.to/2Ywlfwi - but lots of socket and plug combo styles around
  3. Fit another to the output of the DC Adapter you are getting
You can then just switch between the 240V adapter at home and the 12V adapter in the Motorhome by swapping the source plugs over. This saves trying to find a matching jackplug from the myriad of different sizes.
 
The device suggests it should be provided 2.5A, which seems a lot for a clock. Then I spotted that it's a USB charger as well, hence needing a high current input. So, if you don't use it's usb ports, powering it from an ordinary USB should be fine.

Cut up a usb cable and the supply cable that came with it. Wildebus's suggestion of putting connectors on the cut wire is a good one :)
 
Just make sure that you pay attention to Polarity on the dc side of things
 
wildebus said:
The approach I took when I adapted my Amazon Echo to work on 12V instead of 240V is the following:
  1. Cut lead between 240V adapter and jackplug
  2. Fit a connector on each end of the cut wire (so they can be reconnected again). I used these - https://amzn.to/2Ywlfwi - but lots of socket and plug combo styles around
  3. Fit another to the output of the DC Adapter you are getting
You can then just switch between the 240V adapter at home and the 12V adapter in the Motorhome by swapping the source plugs over. This saves trying to find a matching jackplug from the myriad of different sizes.
Click to expand...
Thought I would add a photo to illustrate what I was talking about ....
IMG_20190705_192127 by David, on Flickr
 
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