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carbon transmitter
electronics
Also known as: carbon-button transmitter
Learn about this topic in these articles:
use in telephones
- In telephone: Transmitter
In traditional carbon transmitters, developed in the 1880s, a thin layer of carbon granules separates a fixed electrode from a diaphragm-activated electrode. Electric current flows through the carbon against a certain resistance. The diaphragm, vibrating in response to the speaker’s voice, forces the movable electrode to exert…
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work by Edison
- In Thomas Edison: Menlo Park
…1877 Edison had developed the carbon-button transmitter that was used in telephone speakers and microphones for a century thereafter.
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