In this lesson we'll introduce the control relay, an electromechanical device that forms the principal logical element of an electrically controlled system. Relays can perform numerous functions by selectively energizing or deenergizing other elements within the system or between two separate systems at the appropriate moments to coordinate and sequence activity.
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DC Circuit Analysis https://www.youtube.com/playlist?list=PLdnqjKaksr8qQ9w3XY5zFXQ2H-zXQFMlI
Single Phase AC Circuit Analysis https://www.youtube.com/playlist?list=PLdnqjKaksr8pXF2SpDyyD7ouAVlz96_Ra
3 Phase AC Circuit Analysis https://www.youtube.com/playlist?list=PLdnqjKaksr8qzoIGCYx2rhVK51ZPjXkRO
Hydraulics https://www.youtube.com/playlist?list=PLdnqjKaksr8ruhw85YYSSO6EWLhVVmSKm
Pneumatics https://www.youtube.com/playlist?list=PLdnqjKaksr8qM_nxfOnZhELfIlr6auQZG
Motor Control https://www.youtube.com/playlist?list=PLdnqjKaksr8qRPCFkU2Q8XQe0bfo99rs6
Motors and Generators https://www.youtube.com/playlist?list=PLdnqjKaksr8oba07pG-nE1Omy1_mabMtI
Motor Drives/Variable Frequency Drives (VFD) https://www.youtube.com/playlist?list=PLdnqjKaksr8qruLl85Uq3em62PjXlSNUF
Programmable Logic Controllers (PLCs) https://www.youtube.com/playlist?list=PLdnqjKaksr8qxlMYRVTF2YzTm6RwtA7pc