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Shape memory alloy (SMA) actuators can be deformed by being heated up and cooled down. There are mainly two methods for controlling the deformation of the SMA actuators. The one is to use thermal control devices such as Peltier elements. The other is to electrify the SMA actuators, which utilizes the fact that they are heated up due to Joule heat. The goal of this paper is to improve the response...
A novel smart power management integrated circuit (SPIC) used for electronic ballast is introduced in this paper. Based on a deliberate algorithm, the SPIC offers an optimized operation procedure for the preheat type of fluorescent lamps to realize their three-stage operation: preheating, igniting and burning. An intelligent protection block with different protection modes including over voltage protection...
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