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Electrical Engineering - Direct Current
courses, how-to articles, tutorials, tips, tools, books, degree
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POWER - Free Subscription
Published since 1882 and read by managers and
engineers, POWER is the oldest and most trusted source of
information in the energy industry. Coverage includes boilers
and combustion systems, environmental management;
instrumentation, controls, computers, and software; information
technologies; natural gas, oil, coal, and renewable fuels;
nuclear power; pumps, compressors, valves, and piping; turbines,
engines, and generators; water treatment.
Building a DC Power Supply
This device is commonly used for doing electrophoresis.
Commercially available units that provide the necessary 120VDC usually
cost $1,200 or more. The following one costs less than $20.
Electrical Engineering Awareness and Terminology Certification - $9.99
The Electrical Engineering Awareness and
Terminology Certification has been developed to assess important
concepts, skills and terminology related to Electrical
DC Power Supplies: Fundamental Concepts
This course introduces the student to the
purpose, function, and elements of the ubiquitous DC (direct
current) power supply. Modern electronic devices generally
require low-voltage DC sources to power their circuits. Some
devices use battery or even solar power, but all others need a
DC power supply, typically connected to a house or office AC
(alternating current) wall outlet. These include radios, stereo
systems, TV, computers, and other devices which we use daily. -
Direct current (DC or "continuous current") is the
continuous flow of electric charge through a conductor such as a wire
from high to low potential. In direct current, the electric charges flow
always in the same direction, which distinguishes it from alternating
Direct Current (DC) Electricity
Direct current or DC electricity is the continuous
movement of electrons from an area of negative (-) charges to an area of
positive (+) charges through a conducting material such as a metal wire.
Whereas static electricity sparks consist of the sudden movement of
electrons from a negative to positive surface, DC electricity is the
continuous movement of the electrons through a wire.
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