Engineer’s Corner

ELECTROMAGNETIC RELAY DEFINITIONS By: Don McClatchie When designing or repairing electronic circuits that use electromagnetic relays a clear understanding of the important operational parameters of the relay can help you build a better project or help you to determine the reason for a failure. Let’s start with

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INTERNATIONAL PROTECTION RATING "IP CODE" IP CODE FIRST DIGIT (SOLIDS) SECOND DIGIT (LIQUIDS) IP00 NOT PROTECTED FROM SOLIDS NOT PROTECTED FROM LIQUIDS IP01 NOT PROTECTED FROM SOLIDS PROTECTED FROM CONDENSATION IP02 NOT PROTECTED FROM SOLIDS PROTECTED FROM WATER SPRAY LESS THAN 15 DEGREES FROM VERTICAL IP03 NOT PROTECTED FROM SOLIDS PROTECTED FROM WATER SPRAY LESS THAN 0 DEGREES FROM VERTICAL IP04 NOT

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