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Murata shows off wireless charging system for laptops

Posted on Wednesday, October 05 2011 @ 22:18:50 CEST by

Engadget saw a demonstration of a new wireless charging concept from Murata that supports laptops. The company' capacitive coupling charging system is capable of handling up to 16W with a maximum of 2.1A, but there's still a lot of work to be done as the charging efficiency is only 70 percent.
Do we really need another wireless charging system that's incompatible with industry standards? Murata seems to think that we do. The company's prototype uses neither conductive nor inductive transmission, instead bringing its new capacitive coupling technology to the cordless charging mix. Capacitive coupling uses square transmitter and receiver electrodes, instead of the coils used with Qi devices. It also doesn't require a physical connection like near-obsolete conductive tech, which dictates that both the charging pad and receiving device use metal connectors that must be joined to transfer current. The Murata system is far from being production-ready, with only 70 percent efficiency (30 percent of electricity is lost during transmission). The sample the company had on hand can support 16 watts of output with a maximum of 2.1 amps, making each pad capable of charging several small gadgets, or one larger device, like a laptop.



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