Carbon transmitter

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A telephone transmitter in which a carbon contact is used.

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.

References in periodicals archive ?

In the 1870s, his carbon transmitter immensely improved the telephone and the telegraph.

Thomas Edison lit up lives with his inventions

And while Thomas Edison invented the idea of the microphone when he placed the carbon transmitter inside a telephone it was David Edward Hughes, from Bala, who took the idea a crucial stage further.

Lack of ideas ONWALEs' radar shows necessity of invention; Where have all the great Welsh inventors gone? New figures show innovation in decline. We gave the world radar and powered flight, but seem unable to live up to our past creativity. Darren Devine asks why innovation is going through a lean spell

And while Thomas Edison invented the idea of the microphone when he placed the carbon transmitter inside a telephone, it was David Edward Hughes, from Bala, who took the idea a crucial stage further.