| Component | Circuit Symbol | Function of Component |
| Microphone |  | A transducer which converts sound to electrical energy. |
| Earphone |  | A transducer which converts electrical energy to sound. |
| Loudspeaker |  | A transducer which converts electrical energy to sound. |
| Piezo Transducer |  | A transducer which converts electrical energy to sound. |
| Amplifier (general symbol) |  | An amplifier circuit with one input. Really it is a block diagram symbol because it represents a circuit rather than just one component. |
| Aerial (Antenna) |  | A device which is designed to receive or transmit radio signals. It is also known as an antenna. |
Wednesday, February 13, 2008
Audio and Radio Devices symbols
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