Can I Use A 12v Power Supply On A 5v Device
Camila Farah
However the charger will only supply as much current as the device it s powering is asking for.
For a 5v adaptor with minimal load the voltage may be as high as 12 or 15 v. A 1a device means that for a power supply at a certain voltage 5v for usb the device will ask for 1a from the power supply. Use that old pc power supply as a high current 3 3 5 or 12 volt resource. You would be more than safe to use a 1500w high performance power supply as only 50w will be drawn from.
As long as you don t select the 6 9 or 12v settings on replacement power supply the magic smoke won t escape. However 4 5v may not be high enough to power up the device in which case it either won t turn on or won t function properly although it shouldn t cause any damage. In short when replacing an external power supply or charger. An old 12 volt car battery charger could easily power an lm323 3 amp 5 volt ic but it would take a week to get.
I found the 12v power supply and it actually turned the device on but i unplugged it to prevent any damage. If your device requires 12 volt and draws 1 amp of current a 12 volt power supply will give the required voltage and will be able to supply the 1 amp of current it needs to run. For a device requiring dc in 5v 500ma. Most wall adaptors are not regulated this means that the voltage they produce varies with load.
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Is it dangerous to use it. My daughter has an innotab2 and the batteries died on it while sitting on the shelf. In that same vein if you re replacing a power supply that uses a custom connector used only by one manufacturer then you won t have to worry about polarity either. When the power supply for my belkin usb 4 way crossover went belly up i needed a 5 volt supply capable of outputting a minimum of 2 amps.Make sure the voltage matches. Will using a 12v ac 500ma power supply in a device where the plug says dc 7 5v 400ma be a bad idea. Make sure the new power supply is rated to provide the same amperage or more.
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