This site uses cookies. By continuing to browse the ConceptDraw site you are agreeing to our Use of Site Cookies.

Electrical Symbols — Transformers and Windings

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. Electromagnetic induction produces an electromotive force within a conductor which is exposed to time varying magnetic fields. Transformers are used to increase or decrease the alternating voltages in electric power 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.

Electrical Symbols — Composite Assemblies

Electronic components have two or more electrical terminals (or leads) aside from antennas which may only have one terminal. These leads connect to create an electronic circuit with a particular function (for example an amplifier, radio receiver, or oscillator). Basic electronic components may be packaged discretely, as arrays or networks of like components, or integrated inside of packages such as semiconductor integrated circuits, hybrid integrated circuits, or thick film devices.

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.

Electrical Symbols — Power Sources

A voltage source is a two terminal device which can maintain a fixed voltage. An ideal voltage source can maintain the fixed voltage independent of the load resistance or the output current. However, a real-world voltage source cannot supply unlimited current. A voltage source is the dual of a current source. Real-world sources of electrical energy, such as batteries, generators, and power systems, can be modeled for analysis purposes as a combination of an ideal voltage source and additional combinations of impedance elements.

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.

Electrical Symbols — Semiconductor

Semiconductors are crystalline or amorphous solids with distinct electrical characteristics. They are of high resistance — higher than typical resistance materials, but still of much lower resistance than insulators. Their resistance decreases as their temperature increases, which is behavior opposite to that of a metal. Finally, their conducting properties may be altered in useful ways by the deliberate, controlled introduction of impurities into the crystal structure, which lowers its resistance but also permits the creation of semiconductor junctions between differently-doped regions of the extrinsic semiconductor crystal. The behavior of charge carriers which include electrons, ions and electron holes at these junctions is the basis of diodes, transistors and all modern electronics.

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.

Electrical Symbols — Qualifying

A qualifying symbol is graphics or text added to the basic outline of a device’s logic symbol to describe the physical or logical characteristics of the device.

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.
This vector stencils library contains 44 element symbols of transmitters (electronic amplifiers, repeaters), static devices (rectifiers), phase shift circuits, gyroscopes, and gyrators.
Use it to design the electronic circuit diagrams and electrical schematics.
"An electronic amplifier, amplifier, or (informally) amp is an electronic device that increases the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In this sense, an amplifier modulates the output of the power supply.
There are four basic types of electronic amplifier: the voltage amplifier, the current amplifier, the transconductance amplifier, and the transresistance amplifier. A further distinction is whether the output is a linear or exponential representation of the input. Amplifiers can also be categorized by their physical placement in the signal chain." [Amplifier. Wikipedia]
"A rectifier is an electrical device that converts Alternating Current (AC), which periodically reverses direction, to Direct Current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches." [Rectifier. Wikipedia]
"In telecommunications, a repeater is an electronic device that receives a signal and retransmits it at a higher level or higher power, or onto the other side of an obstruction, so that the signal can cover longer distances." [Repeater. Wikipedia]
"A phase shifter is a microwave network which provides a controllable phase shift of the RF signal. Phase shifters are used in phased arrays." [Phase shift module. Wikipedia]
"A vibrating structure gyroscope, standardised by IEEE as Coriolis vibratory gyroscope (CVG), is a wide group of gyroscope using solid-state resonators of different shapes that functions much like the halteres of an insect.
The underlying physical principle is that a vibrating object tends to continue vibrating in the same plane as its support rotates. In the engineering literature, this type of device is also known as a Coriolis vibratory gyro because as the plane of oscillation is rotated, the response detected by the transducer results from the Coriolis term in its equations of motion ("Coriolis force").
Vibrating structure gyroscopes are simpler and cheaper than conventional rotating gyroscopes of similar accuracy. Miniature devices using this principle are a relatively inexpensive type of attitude indicator." [Vibrating structure gyroscope. Wikipedia]
The example "Design elements - Composite assemblies" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Electrical Engineering solution from the Engineering area of ConceptDraw Solution Park.
Amplifiers, repeaters, rectifiers, phase shift circuits, gyroscopes, and gyrators
Amplifiers, repeaters, rectifiers, phase shift circuits, gyroscopes, and gyrators, touch sensor, rectifier, bridge, proximity sensor, position transmitter, inductor, position transmitter, Desynn type, DC synchro type, position indicator, inductor, position indicator, DC synchro type, phase shifter, network low voltage power, negative impedance, both-way, amplifier, magnetic amplifier, heat source, radioisotope, heat source, combustion, heat source, gyro, gyroscope, gyrocompass, fire extinguisher actuator, fire extinguisher actuator head, single head, connectors, fire extinguisher actuator, fire extinguisher actuator head, double head, connectors, diode-type, ring, demodulator, modulator, converter, rectifier, converter, inverter, rectifier, rectifier-inverter, converter, inverter, converter, DC converter, converter, controlled rectifier, chopper, bridge rectifier, bridge-type rectifier, amplifier, external DC control, external direct-current control, amplifier, bypass, amplifier, 2-way repeater, bypass, low-frequency bypass, 2-way repeater, 4-wire, 2-way repeater, 1-way repeater, telephone repeater,

Electrical Symbols, Electrical Schematic Symbols

ConceptDraw PRO diagramming and vector drawing software enhanced with Electrical Engineering Solution from the Engineering Area of ConceptDraw Solution Park offers you powerful tools and libraries with incredibly large quantity of predesigned electrical symbols as electrical schematic symbols for easy designing professional looking Electrical Schematics.

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.