# Electrical Symbols, Electrical Diagram Symbols

## Electrical Symbols, Electrical Diagram Symbols

When drawing Electrical Schematics, Electrical Circuit Diagrams, Power Systems Diagrams, Circuit and Wiring Diagrams, Digital and Analog Logic Schemes, you will obligatory need the electrical symbols and pictograms to represent various electrical and electronic devices, such as resistors, wires, transistors, inductors, batteries, switches, lamps, readouts, amplifiers, repeaters, relays, transmission paths, semiconductors, generators, and many more. Today these symbols are internationally standardized, so the diagrams designed using them are recognizable and comprehensible by specialists from different countries. Electrical Engineering Solution included to ConceptDraw Solution Park provides 26 libraries with 926 commonly used electrical schematic and electrical engineering symbols making the reality the easy drawing of Electrical diagrams, schematics and blueprints. Now you need only a few minutes to create great-looking Electrical diagram, simply choose required electrical design elements from the libraries, drag them on the needed places at the document and connect in a suitable way. Read more

## Electrical Symbols — Switches and Relays

In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another. The mechanism of a switch may be operated directly by a human operator to control a circuit (for example, a light switch or a keyboard button), may be operated by a moving object such as a door-operated switch, or may be operated by some sensing element for pressure, temperature or flow. A relay is a switch that is operated by electricity. Switches are made to handle a wide range of voltages and currents; very large switches may be used to isolate high-voltage circuits in electrical substations. 26 libraries of the Electrical Engineering Solution of ConceptDraw PRO make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram. Read more

## How To use House Electrical Plan Software

How we can conduct the electricity at house correctly without a plan? It is impossible. The House electrical diagram depicts locations of switches, outlets, dimmers and lights, and lets understand how you will connect them. But design of House Electrical Plan looks a complex task at a glance, which requires a lot of tools and special experience. But now all is simple with all-inclusive floor plan software - ConceptDraw PRO. As a house electrical plan software, the ConceptDraw PRO contains libraries with a large range of professional lighting and electrical symbols, ready-to-use electrical plans samples and examples, and built-in templates for creating great-looking Home floor electrical plans. It is a fastest way to draw Electrical circuit diagrams, Electrical wiring and Circuit schematics, Digital circuits, Electrical equipment, House electrical plans, Satellite television, Cable television, Home cinema, Closed-circuit television when are used the tools of Electric and Telecom Plans Solution from ConceptDraw Solution Park. Files created in Visio for Mac app can be easily imported to ConceptDraw PRO. Also you may import stencils and even libraries. Try for free an alternative to Visio that Apple users recommend. Read more

## Electrical Symbols — VHF UHF SHF

Ultra high frequency (UHF) is the ITU designation for radio frequencies in the range between 300 MHz and 3 GHz, also known as the decimetre band as the wavelengths range from one meter to one decimetre. Radio waves with frequencies above the UHF band fall into the SHF (super-high frequency) or microwave frequency range. Lower frequency signals fall into the VHF (very high frequency) or lower bands. UHF radio waves propagate mainly by line of sight; they are blocked by hills and large buildings although the transmission through building walls is strong enough for indoor reception. They are used for television broadcasting, cell phones, satellite communication including GPS, personal radio services including Wi-Fi and Bluetooth, walkie-talkies, cordless phones, and numerous other applications. 26 libraries of the Electrical Engineering Solution of ConceptDraw PRO make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram. Read more

## Switches and relays - Vector stencils library

The vector stencils library "Switches and relays" contains 58 symbols of electrical contacts, switches, relays, circuit breakers, selectors, connectors, disconnect devices, switching circuits, current regulators, and thermostats for electrical devices.
Use these shapes for drawing electrical diagrams in the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
SPST
SPDT
DPST
DPDT
Make contact
Break contact
Two way contact
Passing make-contact
Spring return
Stay put
Limit switch
Circuit breaker
Spring return 2
Spring return 3
Limit switch n/o
Limit switch n/c
2 position switch
3 position switch
4 position switch
Manual switch
Pushbutton make
Pushbutton break
Pushbutton 2-circuit
Selector switch
Shorting selector
Proximity limit switch
Time delay make
Time delay break
Time delay make 2
Time delay break 2
Safety interlock
Flow actuated
Liquid level actuated
Liquid level actuated 2
Gas flow actuated
Pressure actuated
Temperature actuated
Thermostat
Temperature switch
Inertia switch
Mercury switch
Mercury switch 2
Fuse
Switch disconnector
Isolator
Change-over contact
Relay contacts
Relay coil
Pilot light
Pilot light, push-to-test
Relay, alternating-current
Relay, magnetically polarized
Relay, slow-operate
Relay, slow-release
Relay
Relay, high speed
Relay, mechanically latched
Relay, permanent
Used Solutions