Page 13 - Programmable Logic Controllers, Fifth Edition - Mobile version
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About the Author
Frank D. Petruzella has extensive practical maintenance. He holds a Master of Science degree
experience in the electrical control field, as well from Niagara University, a Bachelor of Science
as many years of experience teaching and author- degree from the State University of New York
ing textbooks. Before becoming a full time edu- College–Buffalo, as well as diplomas in Electrical
cator, he was employed as an apprentice and Power and Electronics from the Erie County
electrician in areas of electrical installation and Technical Institute.
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