Batteries and power supplies

April 2005
Portable Design;Apr2005, Vol. 11 Issue 4, p27
This paper features some batteries and power supplies. For 1-RU single-output medical OEM applications, the Taiyo Yuden's PAM250 passive PFC-based switch-mode power supply provides greater reliability and higher MTRF due to its use of fewer components. Atmel's ATmega406 AVR microcontroller monitors and protects two to four Lilon cells. The device's on-chip voltage regulator allows the device to be powered from 4 to 25 V. It also features three 25-V-tolerant FET drivers for charge, discharge, and pre-charge as well as onchip FET for cell balancing. Harding Energy's The Quest 2 Hour Rapid Charger Kit includes a charger, four 2000-mAh platinum AA NiMH rechargeable batteries, a 110-V ac adapter, and a 12-V dc auto adapter.


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