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Iron core of transformer somehow always have non-linear hysteresis characteristics. Generally, they are symmetry on their three legs of iron core. However, it may also suffer from unsymmetrical flux hysteresis characteristic due to inappropriate or special design. On the other hand, transformer is very sensitive to ferroresonance if it works on saturation area of its flux characteristic. Therefore,...
Zigbee wireless sensor network is widely used in telemonitoring systems, one of which is telemonitoring system for environments. The sensor nodes are placed in areas in which power source are not available. Hence, a system that can supply the energy use of energy resources available in the environment is required. This paper shows the solar power supply design for a node in ZigBee wireless sensor...
Charger is an important part in e-car. For a massive number of e-cars in the future, battery charger should have characteristics of high efficiency, rapid charging capability, portability, low-cost and compatible with the national standar electricity. In order to cover thus five parameters, the battery charger design should be transformerless, employing buck swith converting method, and having a microprocessor...
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