Posted inControl systems
Two Examples Of The Use Of Feedback
The concept of feedback used to achieve a closed-loop control system was described in Section…
Posted inControl systems
History Of Automatic Control
The use of feedback to control a system has a fascinating history. The first applications…
Posted inControl systems
Control system
Engineering is concerned with understanding and controlling the materials and forces of nature for the…
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Electromagnetism
Magnetic field due to an electric current Magnetic fields can be set up not only…
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Reluctance
Composite series magnetic circuits For a series magnetic circuit having n parts, the total reluctance…
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Magnetic flux and flux density
Magnetic flux is the amount of magnetic field (or the number of lines of force)…
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Magnetic circuits
Magnetic fields A permanent magnet is a piece of ferromagnetic material (such as iron, nickel…
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Capacitance
Capacitors Every system of electrical conductors possesses capacitance. For example, there is capacitance between the…
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Capacitors and capacitance
Electrostatic field Figure 6.1 represents two parallel metal plates, A and B, charged to different…