No not all AC adapters are the same.. Some require different voltages and expel different amounts of current and voltage. For example if you break your phone charger and buy a "bootleg" replacement and it possible that it doesn't charge your phone battery properly and will in turn possible ruin your battery.
No. Some computer speakers require AC adapters, while others can run simply on battery power or USB.
No they are not all the same. Universal adapters come in many different voltages and work in different outlets.
No, not all power adapters work at the same speed and time. It depends on the make and model of the computer. Universal adapters also work at a slower speed.
Yes, the USB mini adapters provide the same power as the full sized adapters.
AC adapters are available from a wide range of venders both retail (Walmart)and online (Amazon). AC adapters are so widely available that you should have no problem finding the exact adapter you need.
An AC Adapters are a type of external power supply which is often enclosed in a case. AC Adapters are used within electrical devices that require power but do not contain internal components to derive the required voltage and power from the mains.
What voltage is used in Dell Laptop AC Adapters depends on in which part of the world the laptop gets bought. Europe for example has a diffrent voltage then the USA.
Amazon.com has both new and used ac adapters for all types of devices. Depending on the device you need the adapter for, you can visit the company website and use customer support online to find the adapter replacement you need.
All wireless adapters are the same.
AC power adapters for keyboards can be purchased at your retail computer stores like Best Buy, Future Shop and Laptop Depot. They can also be purchased online at amazon or ebay for a cheap price.
No. AA batteries are DC to begin with. The equipment in question may have an AC power jack, though.
Amazon.com has both new and used ac adapters for all types of devices. Depending on the device you need the adapter for, you can visit the company website and use customer support online to find the adapter replacement you need.