Basic electrical symbols

basic electrical symbols

Where might you see these symbols?

There are a number of places where electrical symbols can be found, including project magazines and on a variety of websites. In some places you can print our your own circuit boards in order to create your own machines or gadgets.

What symbols are the most common to find in electrical projects?

Electric bell
The electric bell is found in a normal house doorbell, and when activated it makes a ringing sound (a sound that you are probably very used to!)

Buzzer
An electrical buzzer is similar to the bell, but instead of a single tone o rbell sound it makes a constant buzz noise.

Loudspeaker
A loudspeaker can take digital input and turn it into analogue sound waves. One of the most important parts of a wide range of electrical products like iPods, TVs and telephones.

You can find many more of these images on this site, so have a look around. There will also be more to come in the future, so bookmarks us and visit often!

Schematic Symbols – Winscope
List of electrical & electronic symbols.
www.mitedu.freeserve.co.uk/Prac/symbol.htm

Electrical symbols

Electrical symbols links

Circuit Schematic Symbols
The schematics symbols for most major electrical components can be found in this table. However, each component may have numerous possible representations. In cases where there is more than one common symbol we have tried to give an alternate representation.
library.thinkquest.org/10784/circuit_symbols.html

Circuits for the Hobbyist
Active Power Zener, Active Antenna for AM-FM-SW, Active Antenna for HF-VHF-UHF, Active FM Antenna Amplifier, Aviation Band Receiver, Alternating On-Off Switch, Audio Booster with 1 Transistor, Audio Pre-Amplifier, Automatic 9-Volt NiCad Battery Charger, Auto-Fan, automatic temperature control, and more in an alphabetized list.
www.uoguelph.ca/~antoon/circ/circuits.htm

Circuit Symbols of Electronic Components
Circuit symbols are used in circuit diagrams which show how a circuit is connected together. The actual layout of the components is usually quite different from the circuit diagram.
www.kpsec.freeuk.com/symbol.htm

Drawings and Sketches
As a Construction Electrician you will be required to read and interpret drawings and specifications, sketches, and electrical diagrams. Before you can work with drawings effectively, you must know how to interpret electrical symbols correctly.
www.tpub.com/ceb/16.htm

Dr. Bob’s ER – Electronic Symbol Library
Battery Symbols, Resistor Symbols, Capacitor Symbols, Diode Symbols, Transistor Symbols.
www.drbob.net/acad/symbol/

Basic Analog Electronic Symbols
A chart with: variable resistor, variable capacitor, diode, zener diode, photodiode, variable inductor, voltmeter, ammeter, input-output, anode-cathode, primary coil – secondary coil.
www.ziplink.net/~teachcte/symb1.html

GCSE Physics: Circuit Symbols
ammeter, battery of two cells, battery of three cells, diode, fuse, lamp, light dependent resistor (ldr), switch (closed), switch (open), thermistor, variable resistor, voltmeter.
www.gcse.com/circuit_symbols.htm

Lessons In Electric Circuits – Circuit Schematic Symbols
Older electrical schematics showed connecting wires crossing, while non-connecting wires “jumped” over each other with little half-circle marks. Newer electrical schematics show connecting wires joining with a dot, while non-connecting wires cross with no dot.
www.ibiblio.org/obp/electricCircuits/Ref/REF_9.html