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moving coil loudspeaker - Loudspeaker that uses a moving "voice coil" placed within a fixed magnetic field. Audio frequency current in the voice coil causes movement which is mechanically transferred to the speaker cone. Also known as a dynamic loudspeaker.
speaker - Also called "loudspeaker." Transducer that converts electrical energy into mechanical energy at audio frequencies.

Audio
Audio Components Audio components convert sound waves into currents and currents into sounds. Devices that convert sound waves to electrical current are normally know as microphones and devices that


Drawing Circuits
Drawing Circuits When designing circuits it is not practical to draw physical likenesses of the components you wish to use. In place of each component a symbol is use to represent it. For example:

Components
Electronic Components There are thousands and thousands of different electrical components, luckily they can be grouped together into parts that have similar functions. In this section we will go t