4. Circuit design. Printed circuit boards
In paragraph 3 we have examined the hardware schematics from a safety point of view, and made our choice of components. The IS rules, summarized in table
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Circuit design. Printed circuit boards
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Bibliography
Regulatory texts
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Equipment construction regulations
Directives in force
Directive 94/9/EC of March 23, 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres.
Official Journal of the European Communities, April 19, 1994.
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Standardization
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European standards EN
French NF standards are the French versions of European standards.
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