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Post by Admin on Jan 24, 2016 21:45:36 GMT
See Link below for diagram.The switch is there to keep power even if the ignition is off and the keys are removed from the car, this may be necessary if your Nexus never charges enough and over time will constantly loose battery power, you can use the switch to give it a permanent supply for a few hours or until fully charged again, us a screen off app to turn the screen off while it is doing this. But the switch is entirely optional. What the diodes do is allow for the Acc and Ign wires to be joined together to give a supply from position 1 till cranking position, and power will never be lost. The diodes stop the power from each supply feeding back to each other. IMPORTANT please note the location of the bands of the diodes, you don't get this right its not going to work. As always, any modifications you make you do at your own risk, If in doubt please get it checked out by an auto electrician.plus.google.com/u/0/115822860655674001204/posts/VksRfrP4RcZ?pid=6128611805497379794&oid=115822860655674001204Top right of diagram in TIP box, take the additional ground from the ground of the Nexus charger Hope it helps p.s. I know I spelt necessary wrong
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Post by flyhigh91 on Jan 25, 2018 3:42:15 GMT
Hi sorry for the late reply,I just got on the forum. I have the same problem with my great old tab4. So i start wondering why this happen. Im not a car mecanic but i know basic electronic. So i first asked myself why this happen. this is what a understand of the problem: Have you already experience your home lights dimming because the fridge kicked in. pretty much the same happen to your car battery. when a huge amount of current(cranking our car in our case) is required from a power source (battery or powersupply), the voltage suddenly drop. we call it "load effect". and secondly, How to avoid the problem. - you can use a capacitor and calculate the time constant required to smooth that voltage drop.(good luck) - use a second battery,one that you can use only for accessories. - or use a power supply specially made for that. like this one: www.mini-box.com/M3-ATX-DC-DC-ATX-Automotive-Computer-car-PC-Power-Supplywith a breakout board like this one: www.robotshop.com/ca/en/cytron-atx-power-supply-breakout-board-right-angle.htmli havnt try any of those solution yet but ill be trying that power supply before messing around with the 2 others method. also can you add detail on your diode method im interrested to know exactly what's going on and what kind of diode you are using.
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