An electric bell is a form of mechanical bell that functions by means of an electromagnet. When the switch is pushed 'on', current flows through the coil. The coil becomes an electromagnet, attracting the metal strip. This moves the clanger to hit the bell, but also breaks the circuit. The coil is no longer a magnet, so the clanger moves back. The circuit has made a gain. The bell keeps ringing until the switch is released. The bells of St Savas A bell is a simple sound-making device. ... An electromagnet is a type of magnet in which the magnetic field is produced by a flow of electric current. ... In electricity, current refers to electric current, which is the flow of electric charge. ... Magnetic lines of force of a bar magnet shown by iron filings on paper A magnet is an object that has a magnetic field. ... An electrical network or electrical circuit is an interconnection of electrical elements such as resistors, inductors, capacitors, diodes, switches and transistors. ...

Two early applications of the electric bell were the telephone and doorbell. Early telephones used electric bells to indicate that there was an incoming call. Doorbells were used by visitors to indicate their presence at the external door of a dwelling or business. Though still in use, the electric bell mechanism in both telephones and doorbells now compete with non-mechanical noisemaking technologies including digitally recorded sounds played back on a speaker. Telephone This article is about telephone technology. ... A doorbell is a signaling device commonly found near a door. ... In digital recording, the analog signal of a motion-picture/sound is converted into a stream of discrete numbers, representing the changes in air pressure (chroma and luminace values in case of video) through time; thus making an abstract template for the original sound. ...