HeadPhones : Working and Structure

Headphones or "head-phones" in the early days of telephony and radio are a pair of small  loudspeakers that are designed to be held in place close to a user's ears. They are also known as earspeakers, earphones or, colloquially, cans. The alternate in-ear versions are known as earbuds or earphones. In the context of telecommunication, a headset is a combination of headphone and microphone. Headphones either have wires for connection to a signal source such as an audio amplifier, radio, CD player, portable media player,mobile phone, electronic musical instrument, or have a wireless device, which is used to pick up signal without using a cable.

Structure of the headphone and its working

The headphones here too follow the conventional structure. However, the part that bears the boom for microphone has a slight difference as an extra cable for it is attached into it.

The left section of the headset houses the microphone and one half of the speaker set. When the speaker section of the headphone is opened, the wiring coming from the headphone jack can be seen soldered to the driver of the speaker section.  The wire coming from the microphone jack doesn’t form any connections to the internal circuitry. The copper wire in a thin plastic covering in the image above is that of the microphone. Instead, the wiring from the jack of the microphone simply extends to the microphone

Right part of the Headset merely houses the headphone circuitry and is not having any extra wire for microphone. A single wire which connects the left and right headphones is placed in the groove of the plastic band.