Electrical Symbols — Transistors
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is composed of semiconductor material usually with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals changes the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. Today, some transistors are packaged individually, but many more are found embedded in integrated circuits.

Pic. 1. Transistors Library
ConceptDraw DIAGRAM is a powerful software for creating professional looking electrical diagram quick and easy. For this purpose you can use the Electrical Engineering solution from the "Engineering" area of ConceptDraw Solution Park.
Electrical Engineering Solution for ConceptDraw DIAGRAM provides the stencils libraries of ready-to-use predesigned 926 vector symbols, templates and samples that make your electrical drawing quick, easy and effective.
26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM 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.

Pic. 2. Electrical Engineering symbols
Electrical diagram software will assist you in drawing your electrical diagrams with minimal effort and makes it very easy for beginners.
Electrical symbols and smart connectors help present your electrical drawings, electrical schematic, wiring diagrams and blue prints.
Pic. 3. Electrical Symbols — Transistors
Most of the electrical symbols can be changed in their appearance, styles and colors according to users' requirements. Electrical symbols are used to represent various electrical and electronic devices in a schematic diagram of an electrical or electronic circuit.
The following table lists some transistors electrical symbols in our electrical diagram software.
| Symbol |
Meaning |
| Electrical Symbols — Transistors |
 | BJT, PNP, env |
 | BJT, PNP |
 | BJT, NPN, env |
 | BJT, NPN |
 | JFET, P, env |
 | JFET, P |
 | JFET, N, env |
 | JFET, N |
 | Transverse biased base, PNP, env |
 | Transverse biased base, PNP |
 | Transverse biased base, NPN, env |
 | Transverse biased base, NPN |
 | Ohmic, NPIN, env |
 | Ohmic, NPIN |
 | Ohmic, NPIP, env |
 | Ohmic, NPIP |
 | Ohmic, PNIN, env |
 | Ohmic, PNIN |
 | Ohmic, PNIP, env |
 | Ohmic, PNIP |
 | Unijunction FET, P, env |
 | Unijunction FET, P |
 | Unijunction FET, N, env |
 | Unijunction FET, N |
 | Darlington transistor, PNP, env |
 | Darlington transistor, PNP |
 | Darlington transistor, NPN, env |
 | Darlington transistor, NPN |
 | Transistor latch, env |
 | Transistor latch |
The transistor is the key active component in practically all modern electronics. Many consider it to be one of the greatest inventions of the 20th century. Its importance in today's society rests on its ability to be mass-produced using a highly automated process (semiconductor device fabrication) that achieves astonishingly low per-transistor costs.
How to Create an Electrical Diagram Transistors Elements Library
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Invented in 1904 by John Ambrose Fleming, vacuum tubes were a basic component for electronics throughout the first half of the twentieth century, which saw the diffusion of radio, television, radar, sound reinforcement, sound recording and reproduction, large telephone networks, analog and digital computers, and industrial process control. From the mid-1950s solid-state devices such as transistors gradually replaced tubes. However, there are still a few applications for which tubes are preferred to semiconductors; for example, the magnetron used in microwave ovens, and certain high-frequency amplifiers.
26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM 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.
Picture: Electrical Symbols — Electron Tubes
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A technical drawing of a building is called an architectural drawing. According to a set of conventions, a building drawing includes a number of views, as well as unit measurements, scales, sheet sizes, cross referencing and annotation. Computer progress had a major impact of the methods of architectural drawing, making manual drawing almost obsolete. Digital drawing software, such as ConceptDraw DIAGRAM , offers a number of tools for each design element: piping plan, floor plan, etc.
Any building should have its plumbing and piping plans for every room, that has a water supply. Plans are applied to indicate arrangement of piping system in the building. This diagram presents a suite of standard piping icons for making building plans that include plumbing and piping layout. This diagram was designed using ConceptDraw solution for Piping and Plumbing planning. Using symbols is valuable for making a valid piping plan. Because any professional will properly interpreted such plan as a piece of technical documentation of a construction project.
Picture: Building Drawing. Design Element: Piping Plan
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ERD drawing becomes easier with predesigned entity relationship symbols, work flow shapes, entity relationship stencils. All variety of ERD symbols you may need for ERDs design is packed into libraries and templates from Entity-Relationship Diagram (ERD) Solution for ConceptDraw DIAGRAM diagramming and vector drawing software.
But anyone have an ERD symbols quick reference? Detailed reference information for them is represented at the tables.
Picture: Anyone Have an ERD Symbols Quick Reference?
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When deciding to start your own business, you have to take into account a bunch of different aspects. One of the ways to get inspired is to look through various restaurant floor plans samples or interior photos of already known establishments. This will help you, but keep in mind that a really unforgettable establishment must be unique.
This restaurant floor plan diagram was designed using ConceptDraw Cafe and Restaurant Floor Plan solution. It can be used as a sample while considering a custom restaurant design. With the help of this example you can estimate the amount of furniture best for a dining room or kitchen of the restaurant. In addition, this plan would be useful as a check list when you will consider a list of the furniture and equipment needed for all areas of the future restaurant.
Picture: Restaurant Floor Plans Samples
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Every engineering project starts from a terms of reference document. The next stage of developing is a technical drawing, which requires using appropriate software. However, revisions and discussions about requirements are possible at any stage of development.
This technical drawing demonstrates a schematic flow diagram of pulp reclaiming. This diagram of magnetite pulp reclaiming is created using ConceptDraw Chemical and Process engineering solution, The solution delivers more than 460 vector graphic icons and connectors. Generally, it is intended for designing process and instrumentation diagrams (P&ID) for chemical and process engineering. block flow diagrams (BFD), process flow diagrams (PFD) for chemical industry.
Picture: Technical Drawing Software
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A power station is an industrial facility for the generation of electric power. Most power stations contain one or more generators, a rotating machine that converts mechanical power into electrical power. The relative motion between a magnetic field and a conductor creates an electrical current. The energy source harnessed to turn the generator varies widely. Most power stations in the world burn fossil fuels such as coal, oil, and natural gas to generate electricity. Others use nuclear power, but there is an increasing use of cleaner renewable sources such as solar, wind, wave and hydroelectric.
26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM 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.
Picture: Electrical Symbols — Stations
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As restaurant industry is growing rapidly nowadays, researches show that almost half of the adults have worked in a restaurant or a cafe. Moreover, many of them dream to start their own someday. Unfortunately, it takes a lot of time to write a business plan and to find a great location, although some know how to create a restaurant floor plan in minutes or how to plan budget effortlessly. Hiring employees can also cause a lot of headache, but this is crucial for further success, because every guest comes to restaurant for a good service and delicious food. It is also worth noting that restaurant concept is also important, because it defines target audience and influences the menu.
This diagram represents the floor plan of an ongoing sports-theme establishment - restaurant, cafe, or other food service. A number of widescreen monitors installed along the perimeter provide visitors the opportunity to follow the course of a match from anywhere in the dining room of restaurant or cafe. The most of sports fans believe that food and alcohol is a big part of any sports show. That is why the dining room takes the most space - almost 60% of the total establishment space. Nearly all sports fans consume beverages while watching sports - beer, soda or water at least. Thus, the restaurant floor plan designers added a large lavatory there. Moreover, project developers considered unnecessary the gender division of such delicate place - perhaps they guess that only men are watching football, or believe that alcohol will eliminate the most of gender differences.
Picture: How To Create Restaurant Floor Plan in Minutes
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While studying, many of the students encounter the necessity of remaking class projects, over and over. To facilitate this process you can use special electrical and telecom plan software, which helps altering projects in several clicks. Using templates will fasten your work, and you will have more free time.
This sample represents an electrical and telecommunication floor plan. Electrical and telecom floor plans contain a floor plan , on which imposed the layout of electrical, and telecommunications equipment. They shows electrical and telecom details regarding the current floor of a building: lightening, fixtures, wires, outlets, circuit panels, etc. Using of standart notation of electrical and telecommunication symbols makes the plan understandable for engineers, architects, constructors, specialist in electricity and telecommunications.
Picture: Electrical and Telecom Plan Software
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Digital electronics or digital (electronic) circuits are electronics that handle digital signals – discrete bands of analog levels – rather than by continuous ranges (as used in analogue electronics). All levels within a band of values represent the same numeric value. Because of this discretization, relatively small changes to the analog signal levels due to manufacturing tolerance, signal attenuation or parasitic noise do not leave the discrete envelope, and as a result are ignored by signal state sensing circuitry.
26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM 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.
Picture: Electrical Symbols — Analog and Digital Logic
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