jonny3010 wrote:what resistor do I need?
i got a 5v volt plug 4A output. What resistor do i need to limit an device to 1A so it cant draw anymore than 1A. I have 4 devices that need 1 Amp Each so a resistor is the best one to limit the power so they don't get over amped
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You do NOT need a resistor the 5V will be less than 5V at the device.
For power distribution just like the fuse box in your house you need 1A or less fuses in line with each device which will have a lower voltage drop.
All resistors will drop voltage as defined by Ohms law
V = I * R
So for any current flowing through the resistor, a voltage drop will occur.
So if 1A and 1ohm you will drop 1V, so the device will only get 4V
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