INTRODUCTION
All modern engineering system includes
certain aspects of control system at some point in their broadcast scenes,
control engineering and the associated theory are concerned with the means of
making system to behave in a desired may.
The system on this thesis is a DC – AC
inverter which is an apparatus used in the conversion of direct current (DC) to
alternating current (AC).
In our contry today, this equipment is
not all that in use not because it is not important but because people never
give it a thought as per the construction and design.
It is meant for use with a 12volts
leadacid battery of it’s in a car for example a suitable output voltage of
240volts AC obtainable.
This output voltage of 240volts AC can
be used for powering small electrical appliances such as lights, electrical
tools radio, soldering iron, fan etc. However,
it is with mentioning that the DC generated with this appliance is
nothing comparable to the AC generated by big generation duration. This
appliance is therefore suitable for short time replacement for the real AC
generation especially in the remote areas and it is install where electrical
appliances are sold and the need might arise for it to be tested and certified
good.
Another main area where this equipment
can be of great utility is in communication system. In a situation where there
is a constant AC power supply failure example in offices DC – AC inverter is
needed and such cases, inverter can be used as a source of light.
Most industries in the country do not
make use of DC – AC inverter because the are through to be costly with respect
to the task they perform. However, putting into consideration the task, this
appliance can perform. It can be concluded that it is cheaper. The construction
is simple, cheaper, easy to operate and portable. The usefulness of this device
and the function cannot be over emphasized especially now that our country is
passage through a very sensitive era in our power generating Authority (NEPA)
has been dubbed NEVER EXPECT POWER ALWAYS. In these times when control and
monitor of complex field operations have based in computer, a failure of AC,
power supply to communication equipment means work stoppage and to some small
scale industries a lot of economic and materials losses is avoidable.
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