Howtosignalprocessing
What are Type A and B sockets?
For USA there are two associated plug types, types A and B. Plug type A is the plug which has two flat parallel pins and plug type B is the plug which has two flat parallel pins and a grounding pin. USA operates on a 120V supply voltage and 60Hz.
Can I fit a socket myself?
Do you need a qualified electrician to change a socket? No. If you're just changing the style of your electrical socket or switching to a USB socket, it's a simple enough task for a confident, beginner DIYer to do.
What are the sockets on the walls for?
A wall socket is a place in a wall where you can connect electrical equipment to the electricity supply. There is no wall socket for a hairdryer in the room.
