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# 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.

## Astronomy Symbols

Are you an astronomer, astronomy teacher or student? And you need to draw astronomy pictures quick and easy? ConceptDraw PRO diagramming and vector drawing software extended with Astronomy solution from the Science and Education area will help you!
Astronomy solution provides 7 libraries with wide variety of predesigned vector objects of astronomy symbols, celestial bodies, solar system symbols, constellations, etc.

## Types of Flowcharts

A Flowchart is a graphically representation of the process, algorithm or the step-by-step solution of the problem. There are ten types of Flowcharts. Using the Flowcharts solution from the Diagrams area of ConceptDraw Solution Park you can easy and quickly design the Flowchart of any of these types.
How to Simplify Flow Charting

## Electrical Symbols — Stations

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 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.

## Pie Charts

Pie Charts are extensively used in statistics and business for explaining data and work results, in mass media for comparison (i.e. to visualize the percentage for the parts of one total), and in many other fields. The Pie Charts solution for ConceptDraw PRO v10 offers powerful drawing tools, varied templates, samples, and a library of vector stencils for simple construction and design of Pie Charts, Donut Chart, and Pie Graph Worksheets.

## Manufacturing and Maintenance

Manufacturing and maintenance solution extends ConceptDraw PRO software with illustration samples, templates and vector stencils libraries with clip art of packaging systems, industrial vehicles, tools, resources and energy.