wild foamy Posted January 17, 2009 Posted January 17, 2009 Hi everyone. im getting myself a little satnav and would like it to be able to charge from my bike whilst im riding. i can use the satnavs' mini USB port to supply the power (5Vdc), and because maplins sell the individual connectors i can make an adapter without much of a problem. BUT. my bike uses a 6V regulated supply for the indicators and brake light, would i be able to run a second wire from the Positive terminal on my 6Vdc battery, drop it through a 5Vdc regulator to the USB plug and then run a common ground from the USB plug and the regulator to the negative terminal on the battery, with an on/off switch on the handlebars i was aiming for a 0.5 amp draw, which should be okay as my haynes manual indicates the charging current is a minimum of 0.8A (lights on @ 3000RPM) up to 2.0A (lights off @ 8000RPM) any advice would be appreciated Steve
pilninggas Posted January 17, 2009 Posted January 17, 2009 that should work fine, in fact its a great idea as the bike is 6volt. any of the 1-1.5amp voltage regualtors would work and should provide a rock steady 5 volts to drive the sat-nav. id use something like this:http://www.maplin.co.uk/Module.aspx?ModuleNo=10529
wild foamy Posted January 17, 2009 Author Posted January 17, 2009 Lol, great minds think alike, i was just on the maplins website as i drew up that little schematic. quick blast up to andover tomorrow then to go shopping for some parts
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