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http://dx.doi.org/10.7731/KIFSE.2016.30.6.071

Cause Analysis and Countermeasure of Tracking in Mobile Phone Charger  

Park, Jin-Young (Korea Electrical Safety Corporation (KESCO))
Kim, Jae-Hyun (Korea Electrical Safety Corporation (KESCO))
Park, Kwang-Muk (Korea Electrical Safety Corporation (KESCO))
Bang, Sun-Bae (Korea Electrical Safety Corporation (KESCO))
Publication Information
Fire Science and Engineering / v.30, no.6, 2016 , pp. 71-77 More about this Journal
Abstract
The electrolyte of the capacitor in mobile phone chargers leaks to the power input terminal resulting in tracking on the PCB board to form a carbonized conductive path. As a result of structural analysis of the cause of the tracking, It occurred when the power input terminal and the PCB board were connected directly using the connector. The larger the amount of electrolyte leaked from the capacitor into the power input terminal, or the lower the height of the partition provided between the plug pins of the power input terminal, the higher the tracking occurrence rate. Accordingly, to lower the occurrence rate of tracking in the charger, it is necessary to provide a partition on the capacitor or increase the height of the partition provided on the power input terminal so that the leaked electrolyte does not flow to the power input terminal. In addition, the tracking occurrence rate will be reduced further if the shape of the PCB board touching ther power connection terminal is changed to ${\Pi}$.
Keywords
Electrolyte; Tracking; Capacitor; Partition Wall; Mobile Phone Charger;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
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