Comments on: Improved laptop grounding idea

By: Tomi Engdahl

Tomi Engdahl — Thu, 12 Dec 2013 11:58:24 +0000

Much of the laptops chargers may interfere with the operation of other electrical equipment. The pan-European study shows that only a quarter of the chargers were compliant.

The study says tuk (Safety and Chemicals Agency), which explained the situation, with the 18 other EU;’s market authority.

Electromagnetic compatibility (EMC electromagnetic compatibility) to ensure that electrical equipment is functioning properly in conjunction with other same platform of devices. Products tested, only 23 percent met all the requirements of the EMC.

Shortcomings of electromagnetic compatibility can affect the operation of other electrical equipment.

Laptop chargers surveillance project was carried out during the year. Finland was tested in ten different products available here. Two of them were placed the ban on exports. In addition, given a few comments on labeling and documentation deficiencies.

“In most cases, in charge devices with markings and documents were not in order, was also exceeded emissions requirements,”

According to him, the campaign results show that the laptops charging equipment manufacturers electromagnetic compatibility still a lot of room for improvement.

Source: http://www.tietokone.fi/artikkeli/uutiset/suuri_osa_kannettavien_latureista_ongelmaisia

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By: Computers Laptop

Computers Laptop — Wed, 21 Mar 2012 07:38:43 +0000

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By: Michal

Michal — Wed, 14 Mar 2012 15:50:37 +0000

Regarding the connection between “-” on secondary side and PE on primary side – are you sure your power supply isn’t broken? I have just checked four different power supplies (HP, Dell, Lenovo) and not a single one had such connection. In fact, joining PE with anything is a sure way to trigger residual current breaker if one has it in his home. Maybe your noise problems were caused not by the link too far from power jack, but by the fault in PSU itself? Did you try using a different PSU?