Thank you all who gave their inputs to the burning card module. Many safety engineers out there believe there are no hazards associated with power limited low voltage circuitry. As many of you have read the various responses, even with Approved Equipment, there is still the potential of fire. If we were to design products to safety standards (providing a suitable fire enclosure, electronic components on min V-1 flame rated boards, power limited circuitry, etc.), we are still not reducing the risk of ignition due to bad design (for example, reverse polarity mounting of tantalum capacitors) or from external influences (for example, lightning).
I strongly believe that safety standards should address the issue of ignition from electronic components. The 950 series of standards as written today does not address the electronic design engineer. If you read it carefully, it even allows an opening in the top or sides of a fire enclosure as large as you anyone cares to have (assuming no accessibility to hazardous live parts). If we wish to make it a better world for our kids, we must participate in the various Technical Committes and offer our professional advice. Best Regards to All and have a nice and Safe Weekend. PETER S. MERGUERIAN MANAGING DIRECTOR PRODUCT TESTING DIVISION I.T.L. (PRODUCT TESTING) LTD. HACHAROSHET 26, P.O.B. 211 OR YEHUDA 60251, ISRAEL TEL: 972-3-5339022 FAX: 972-3-5339019 E-MAIL: [email protected] Visit our Website: http://www.itl.co.il --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
