AC to DC 12V 1.5A Power Adapter Supply, Plug UK 5.5mm x 2.1mm

£4.99
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AC to DC 12V 1.5A Power Adapter Supply, Plug UK 5.5mm x 2.1mm

AC to DC 12V 1.5A Power Adapter Supply, Plug UK 5.5mm x 2.1mm

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Price: £4.99
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The amperage provided by your charger must match or exceed what the device being charged requires. Amperage Provided Versus Amperage Required Power Supply or Charger Amperage Rating

12 Volt 1.5 Amp Worldwide Power Supply (US/EU/UK/AU) Nebra 12 Volt 1.5 Amp Worldwide Power Supply (US/EU/UK/AU)

The input line voltage (wall or “mains” power) must be supported but is unrelated to compatibility with the device being charged or powered. The other problem is size of the coaxial connector, and the combinations are nearly endless. There is the I.D. or Inside Diameter, which is what size the pin will fit into, and then there is the O.D. or Outside Diameter, which is the outside ring that plugs into the device to be charged.The output amperage must match or be greater than that required by the device being charged or powered.

Power supply units : CCTV Kits Power supply units : CCTV Kits

When replacing a charger, this is easy to determine: it’ll be listed somewhere on the old charger. In your case, the old charger supplied 19 volts, so your replacement must also be 19 volts. Sidestep all those unknowns and make sure to get exactly the right voltage from the start. Amperage I am an electronics guy and am with Leo on this one. Andrew’s comments are more about the internals of a device being run but the question was about the current rating of a charger.No, amps do not have to match, but the power supply or charger must be able to supply enough amps as required by the device being powered or charged. In practical terms, that means the amperage rating of a power supply or charger must match or exceed that required by the device it is connected to. Does more volts mean more amps? Leo, I agree with your analogy re power supplies. However, your statement that voltage is constant is not correct. If you load up a power supply, you will have losses in the wire that connects the supply (wall wart) to the device. Engineers like to refer to this as I

12V AC Adapters | RS 12V AC Adapters | RS

Yes. Because a) the voltage matches, and b) the amperage provided is greater than that needed, you can use a 5v-2A charger with a 5V-1A device. Is 500ma the same as 0.5 A? Electrically speaking, higher voltage can cause more amps to “flow”. This is one reason why getting the voltage correct on a power supply is so critical, because it can, in a sense, “push” too much electricity through a device and cause it to overheat or be damaged. Can too many amps damage a device? Thus, as long as you replace your power supply with one capable of providing as much or more amps than the previous, you’ll be fine. In other words, there is nothing wrong with having a charger capable of providing more amps than needed. PolarityOh Leo, you’re a great IT guy but not so hot at getting electronics across to beginners. I could agree with your definition of Voltage – the ‘push’ on the electrons that tries to make them move and make a current, but not your definition of Current. The load / laptop / whatever does NOT pull – it lets the current through; faster if the resistance is low, slower if it’s high. Current is how fast the electrons (that carry the charge) are moving. Interesting analogy for volts vs amps. I’d always heard the water hose comparison, voltage is the water pressure, amperage is the amount of water flowing through the hose.



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