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VPG Announces Positive Test Results for Bulk Metal Foil Current Sensing Resistors

Vishay Precision Group, Inc. today announced that it has completed tests showing that its Bulk Metal Foil current sensing resistors meet the accuracy and stability required by its aircraft customers for charging of Li-ion batteries in avionics applications.
VFR resistors provide a variety of device configurations and ultra-high-precision specifications to help ensure the efficient and safe charging of Li-ion batteries. They include the surface-mount Z-Foil VCS1610Z and VCS1625ZP and the high-power VCS331Z and CSNG (offering 3- or 6-chip constructions).
The Li-ion battery charging process goes through several critical phases to ensure the battery is charged to its maximum capacity, while at the same time following certain safety rules to avoid explosion or fire. Li-ion battery chargers require accurate current and voltage settings and monitoring, as well as a constant current and constant voltage. If these accuracy requirements are not met, the charger will undercharge or overcharge the battery. A failure to completely charge the battery results in reduced battery life, while overcharging can cause batteries to fail due to overheating.
More http://www.azosensors.com/news.aspx?newsID=6490

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