One of the most efficient lighting technology is based on light-emitting diodes (LEDs). Common LED drivers with AC-input (50-60Hz) usually require a bulk electrolytic capacitor to decrease low-frequency ripple in the output. However, the critical element that limits the lifespan of the LED driver is the electrolytic capacitor. An isolated off-line LED driver is proposed in this paper, in which ...

Metal Halide High Intensity Discharge lamps are becoming popular because of its high efficacy. The operating characteristic of Metal Halide High Intensity Discharge (HID) lamps is complex as it has several stage of operation. So electric control system is required to control the operation of metal halide high intensity discharge lamps. Electric control system involves a number of non linear dev...

Intelligent Universal Transformer (IUT) is a key point introducing as an Intelligent Electrical Devices (IED) for Advanced Distribution Automation (ADA) in future. ADA is the state of art, comprising flexible electrical architecture contributed with open communication construction for the tomorrow’s distribution automation. IUT is based on a power electronic transformer employing the new techno...

in this paper, two methods have been used: multi-layer perceptron artificial neural network (ann-mlp) and universal kriging to estimate of velocity field. neural network is an information processing system which is formed by a large number of simple processing elements, known as artificial nerves. it is formed by a number of nodes and weights connecting the nodes. the input data are multiplied ...

In this paper, a highly efficient and fast transient output capacitor-free low-dropout regulator (LDO) presented. The proposed LDO architecture is based on differential transconductance amplifiers pairing with push–pull stage to enable effective output driving capability. The slew rate at the gate of the output transistor ðSRGÞ is further enhanced by common mode-feedback (CMFB) resistors and a ...