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Graphic symbols for Diagrams of electrical power and control

EUR ING Alan Foxall
It would appear that BS 3939 and IEC 617 etc covering graphic sysmbols of electrical Power and control have been withdrawn and not replaced or superseded. Can anybody advise me what standard  (if any) is now applaicabe for IEC Electrical Power amd control Grapahic symbols?


Alan Foxall
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    mapj1:

    And if you just want to look one up to see what it is, there are plenty of
    images of the common ones. that are out there for free . (Though I am still sticking to wiggley resistors and logic gate symbols that are not squares personally )




    Thanks, Mike for the useful link to the freeby images. The rectangular symbol for the resistor is easier to draw than the wiggly one, though one could argue that nowadays most electrical diagrams are software-produced, so drawing of a complicated shape is not an issue. ANSI logic gate symbols are OK only for basic gates (AND, OR, NAND, etc.). They are of little use for compound logic symbols, for which purpose rectangular shapes work well.

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  • 0

    mapj1:

    And if you just want to look one up to see what it is, there are plenty of
    images of the common ones. that are out there for free . (Though I am still sticking to wiggley resistors and logic gate symbols that are not squares personally )




    Thanks, Mike for the useful link to the freeby images. The rectangular symbol for the resistor is easier to draw than the wiggly one, though one could argue that nowadays most electrical diagrams are software-produced, so drawing of a complicated shape is not an issue. ANSI logic gate symbols are OK only for basic gates (AND, OR, NAND, etc.). They are of little use for compound logic symbols, for which purpose rectangular shapes work well.

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