Use the Electrical Engineering drawing type to create electrical and electronic schematic diagrams.
To be able to read schematics you must know the schematic symbols. Here is an overview of the most used symbols in circuit diagrams. The symbol for a battery is shown below. A large and a small line is suppose to represent one battery cell so that the image below would suggest a two-cell battery of 3 V. Electrical current transfers energy around circuits. There are two types of current: direct and alternating.
Newer versionsOffice 2010Office 2007
- On the File tab, click New, and then search for Engineering templates.
- Click one of the following:
- Basic Electrical
- Circuits and Logic
- Fluid Power
- Industrial Control Systems
- Parts and Assembly Drawing
- Piping and Instrumentation Design
- Plumbing and Piping Plan
- Process Flow Diagram
- Systems
- TQM diagram
- Work Flow Diagram
- Choose Metric Units or US Units, and then click Create.The template opens an unscaled drawing page in portrait orientation . You can change these settings at any time.
- Drag electrical component shapes onto the drawing page. Shapes can have data. You can enter shape data and add new data to a shape.Enter shape data
- Select a shape, right-click, click Data, and then click Define Shape Data.
- In the Define Shape Data dialog box, click in each item and type or select a value.
- Use the Connector tool to connect electrical components or connector shapes.Use the Connector tool
- Click the Connector tool .
- Drag from a connection point on the first shape to a connection point on the second shape. The connector endpoints turn red when the shapes are connected.
Use connector shapes- Drag a connector shape onto the drawing page.
- Place the connector's begin point on the parent shape (the shape you’re connecting from).
- Place the connector's end point on the child shape (the shape you’re connecting to).When the connector is glued to the shapes, the endpoints turn red.
- Label individual electrical component shapes by selecting the shape and typing.
- On the File tab, click New, and then under Template Categories, click Engineering.
- Click one of the following:
- Basic Electrical
- Circuits and Logic
- Fluid Power
- Industrial Control Systems
- Parts and Assembly Drawing
- Piping and Instrumentation Design
- Process Flow Diagram
- Systems
- Choose Metric Units or US Units, and then click Create.The template opens an unscaled drawing page in portrait orientation . You can change these settings at any time.
- Drag electrical component shapes onto the drawing page. Shapes can have data. You can enter shape data and add new data to a shape.Enter shape data
- Select a shape, right-click, click Data, and then click Define Shape Data.
- In the Define Shape Data dialog box, click in each item and type or select a value.
- Connect electrical components using the Connector tool or connector shapes.Use the Connector tool
- Click the Connector tool .
- Drag from a connection point on the first shape to a connection point on the second shape. The connector endpoints turn red when the shapes are connected.
Use connector shapes- Drag a connector shape onto the drawing page.
- Place the connector's begin point on the parent shape (the shape you’re connecting from).
- Place the connector's end point on the child shape (the shape you’re connecting to).When the connector is glued to the shapes, the endpoints turn red.
- Label individual electrical component shapes by selecting the shape and typing.
- On the File menu, point to New, point to Engineering, and then click one of the following:
- Basic Electrical
- Circuits and Logic
- Industrial Control Systems
- Systems
These templates open an unscaled drawing page in portrait orientation . You can change these settings at any time. - Drag electrical component shapes onto the drawing page. Shapes can have data. You can enter shape data and add new data to a shape.Enter shape data
- Select a shape, and then on the Shape menu, click Shape Data.
- In the Shape Data dialog box, click in each item and type or select a value.
- Connect electrical components using the Connector tool or connector shapes.Use the Connector tool
- Click the Connector tool .
- Drag from a connection point on the first shape to a connection point on the second shape. The connector endpoints turn red when the shapes are connected.
Use connector shapes- Drag a connector shape onto the drawing page.
- Place the connector's begin point on the parent shape (the shape you’re connecting from).
- Place the connector's end point on the child shape (the shape you’re connecting to).When the connector is glued to the shapes, the endpoints turn red.
- Label individual electrical component shapes by selecting the shape and typing.
Common circuit diagram symbols (US symbols)
An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may vary from country to country, or engineering discipline, based on traditional conventions.
- 2Gallery of common electronic symbols
- 2.7Transistors
- 3Gallery of historical electronic symbols
Standards for symbols[edit]
The graphic symbols used for electrical components in circuit diagrams are covered by national and international standards, in particular:
- IEC 60617 (also known as British Standard BS 3939).
- ANSI Y32.2-1975 (also known as IEEE Std 315-1975 or CSA Z99-1975)
- IEEE Std 91/91a: graphic symbols for logic functions (used in digital electronics). It is referenced in ANSI Y32.2/IEEE Std 315.
- Australian Standard AS 1102. (Based on a slightly modified version of IEC 60617, Withdrawn without replacement with a recommendation to use IEC 60617)
Symbols usage is sometimes unique to engineering disciplines and national or local variations to international standards exist. For example, lighting and power symbols used as part of architectural drawings may be different from symbols for devices used in electronics.
Gallery of common electronic symbols[edit]
Symbols shown are typical examples, not a complete list.[1][2]
Traces[edit]
- IEC-style trace junction
- Trace crossing
Circuit return[edit]
- IEC-style ground (GND) symbol
- Signal/Low noise ground (GND) symbol
- IEC-style chassis-ground symbol
Sources[edit]
- Single cell, multi-cell battery
- Battery, multi-cell
- Voltage source
- Controlled voltage source
- Current source
- Controlled current source
- AC voltage source
Resistors[edit]
- (a) resistor, (b) rheostat (variable resistor), and (c) potentiometer (All of them are American style symbols)
- (a) resistor, (b) rheostat (variable resistor), and (c) potentiometer (All of them are IEC style symbols)
- Thermistor or Varistor
Capacitors[edit]
- IEC-style capacitor, general symbol
- Capacitor, polarized (American)
- IEC-style ganged (co-moving) variable capacitors
- Trimmer capacitor
Inductors[edit]
- IEC-style air-cored Inductor
- Inductor with magnetic core (IEEE Std 315)
- IEC-style tapped Inductor
Transistors[edit]
Unipolar[edit]
- Enhancement mode, N-channel MOSFET
- Enhancement mode, P-channel MOSFET
Bipolar[edit]
- NPN darlington
- PNP darlington
Diodes[edit]
- Silicon-controlled rectifier (SCR)
Antennas[edit]
- IEC-style antenna
- IEC-style dipole antenna
- IEC-style loop antenna
- Loop antenna (IEEE Std 315)
Vacuum tubes[edit]
Switches[edit]
- Switch, Single Pole/Single Throw (SPST)
- Switch, Single Pole/Double Throw (SPDT)
- Switch, Double Pole/Double Throw (DPDT)
- Pushbutton, Momentary or Spring-Return, make (IEEE Std 315)
- Pushbutton, Momentary or Spring-Return, break (IEEE Std 315)
- Pushbutton, Momentary or Spring-Return, two circuit (IEEE Std 315)
Relays[edit]
- American-style relays, SPST, SPDT, DPST, DPDT
- IEC relay symbol, SPDT
Lamps[edit]
- Indicating lamp (IEEE Std 315-1975)
- Incandescent light bulb (as an indicator)
- Light bulb
Current limiters[edit]
- IECFuse (a), equivalent symbols (b,c) (IEEE Std 315-1975)
- Moulded Case Circuit Breaker (MCCB)
- Fuse: IEC (top) and American (lower two)
Transformers[edit]
- Transformer with center tap
- Transformer with two secondary windings
- Current Transformer
- Zero-Sequence Current Transformer (ZSCT) (also known as a window-type current transformer)
- Bushing-Type Current Transformer
- Voltage Transformer
Electro-acoustic devices[edit]
- IEC-style microphone
- Microphone (IEEE Std 315)
- Loudspeaker (IEEE Std 315)
Miscellaneous devices[edit]
- Ferrite bead ring (IEEE Std 315)
Gallery of historical electronic symbols[edit]
The shape of electronic symbols have changed over time. Some symbols were more prevalent in some countries. The following are historic electronic symbols that might be found in old electronic books and schematics.
Capacitors (historical)[edit]
See also[edit]
References[edit]
- ^Circuit Symbols for all Electronic Components. Talking Electronics, 2013. Retrieved 01 Apr 2015.
- ^Electrical Symbols & Electronic Symbols. RapidTables, 2012. Retrieved 17 April 2016.
External links[edit]
Wikimedia Commons has media related to Electrical symbols. |
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