If you buy the right power supply, you should be able to use your electronic devices without problems for quite some time. Here are some great tips on how to buy a power supply the right way. There are three considerations in correctly determining the amount of power you will need.
One consideration is what type of power your power supply will use as input and output. Most of us are familiar with what radio amateurs call wall warts. A wall wart is the type of converter that plugs directly into your home's AC outlets (wall plugs).
Another consideration is what voltage you will need. Don't assume that a wall wart with the same plug size will work as well for your device as another. Your power supply must specifically match the device you are powering.
If you supply too much voltage to your electronic device or not enough, you can cause serious damage to your device and possibly yourself. Be sure to check your device's manual and / or stickers to determine the correct voltage needed.
A third consideration is the amount of amps your power converter will supply. This is where fuses and circuit breakers need to kick in to keep things from going too far. Don't take dangerous risks – get the right combination for your team.
Also determine if there are other less basic considerations. Some power supplies for the same voltage and amperage are smaller than others due to a design that can wear out faster than other designs.