BASIC DC THEORY 1 next> DC SOURCES When most people think of DC, they usually think of batteries. In addition to batteries, however, there are other devices that produce DC which are frequently used in modern technology. Batteries A battery consists of two or more chemical cells connected in series. The combination of […]
BASIC ELECTRICAL THEORY 6
<previous BASIC ELECTRICAL THEORY 6 BASIC ELECTRICAL THEORY EXAM click here What is a magnetic circuit? To better understand magnetic circuits, a basic understanding of the physical qualities of magnetic circuits will be necessary. Hysteresis When current in a coil reverses direction thousands of times per second, hysteresis can cause considerable loss of […]
BASIC ELECTRICAL THEORY 5
<previous BASIC ELECTRICAL THEORY 5 next> Magnetism Certain metals and metallic oxides have the ability to attract other metals. This property is called magnetism, and the materials which have this property are called magnets. Some magnets are found naturally while others must be manufactured. Magnetism is a result of electrons spinning on their own […]