Longdex DC 9V 1A 9W Power Adapter AC 100-240V Switching Power Supply Transformer AC-DC Converter DC Jack 5.5x2.5mm

hey guys today I'm going to show you how to pick out the correct AC DC adapter this is a very specific and important process that requires four major pieces of information to be successful using this particular product I'm going to show you the things you need to know and where to find them as well as a general idea of what they mean so let's get started and I'll show you what to look for now we'll take a look at the power supply here in a minute if you have that but if you don't this product tells us all four things we need the voltage the amperage the polarity and voltage type and why we would have to measure for it the plug type or size let's talk ACDC a C stands for alternating current and comes from the wall anything that plugs straight in is AC if it requires an adapter it will convert either AC to a lower AC voltage or AC to DC direct current flows in one direction and AC alterna