David Hughes

Born: 16 May 1830, London, United Kingdom.

INVENTIONS

1.Carbon Microphone:-

The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal. It consists of two metal plates separated by granules of carbon.The primary applications for carbon mics were public address, broadcast, military operations, and telephony. The rugged mics offered a high output level and their simple construction made them relatively inexpensive to manufacture.

Death:17 December 1419, Harewood, United Kingdom.