@article{MAKHILLJEAS2021161719572,
    title = {Design and Implementation of Automatic Selector Switch with up down Protection for A.C
220 Volts Feeders},
    journal = {Journal of Engineering and Applied Sciences},
    volume = {16},
    number = {17},
    pages = {394-399},
    year = {2021},
    issn = {1816-949x},
    doi = {jeasci.2021.394.399},
    url = {https://makhillpublications.co/view-article.php?issn=1816-949x&doi=jeasci.2021.394.399},
    author = {Jabbar},
    keywords = {Selector switch,arduino,three phase,transformer,relays and LCD},
    abstract = {The proposed design in this paper is to design
and implementation of automatic selector switch with
high and low levels protection for A.C 220 volts. The
purpose of this research to avoiding using of a manual
selector switch inside the customers electric power supply
cabinet. The mains goals of the proposed design are, first
avoid approaching anyone from the homes electric power
supply cabinet through design of an automatic device to
perform the conversion of right electric power line
without human intervention. Second, supply safe and
stable electrical power for homes in all time and ensure
the operation of household appliances without any
stopping time. There'd, provide the protection of
household appliances from the high rise to the level of
input voltages to more than 250 volts, or falling the level
to less than below 175 volts, in addition to displays the
output status of the system in a Liquid Crystal Display
(LCD) and Light Emitting Diode (LED). The proposed
design is done by using Arduino Uno board, step down
transformer, drivers, relays, LCD and some of capacitor,
resistor and diodes. The prototype design result
implementation are shown in Table 1 and the Fig. 4, 5, 6
respectfully.}
    }