carbon microphone

Noun

Meaning

carbon microphone (plural carbon microphones)

A microphone containing carbon granules, whose electrical resistance varies with pressure.

Source: en.wiktionary.org

Examples

After protracted patent litigation, in 1892 a federal court ruled that Edison and not Emile Berliner was the inventor of the carbon microphone. Source: Internet

In 1879, the Bell company acquired Edison's patents for the carbon microphone from Western Union. Source: Internet

In 1878, David E. Hughes noticed that sparks could be heard in a telephone receiver when experimenting with his carbon microphone. Source: Internet

Modulation is done by the large carbon microphone (cone shape) in the antenna lead. Source: Internet

Modulation was usually accomplished by a carbon microphone inserted directly in the antenna or ground wire; its varying resistance varied the current to the antenna. Source: Internet

The carbon microphone was also used in radio broadcasting and public address work through the 1920s. Source: Internet

Close letter words and terms

carbon literacy carbon market carbon material carbon monofluoride carbon monoxide carbon monoxide detector