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Circuit symbols 2

Components–symbols andfunction in circuits● Electronic symbols are used in electric

circuits in order to representcomponents. The use of these symbolsis universal so a circuit can be readand understood by physicists whospeak different languages.

amplifiercapacitorcellelectrolytic

capacitor

galvanometerlight-dependent

resistor (LDR)

Key words

cell

lamp

switch

two cells

microphone/tape recorder

motor

Heater

Fixed resistor

Potential divider

Capacitor

Voltmeter

Galvanometer

Microphone

Earphone

Loudspeaker

+

A

V

M

Ammeter

Transformer withferromagnetic core

Inductor withferromagnetic core

Inductor Motor

Electric bell(Polarized) electrolyticcapacitor

M

Light dependent resistor(LDR)

Photo-voltaic cell

Amplifier

*04 Electronics (160-187).qxd 2/2/07 12:15 pm Page 161