الفهرس 
Chapter (1) Introduction and Historical ReviewOnly 14 pages are availabe for public view
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Abstract
Today, modern society entirely depends on electricity for human life applications. Therefore, the world is experiencing an energy problem due to the excessive daily consumption. So, an effective electronic controlling technique must be used for power saving.
In the present thesis, for achieving the demanded power saving, two simple and low-cost manual and automatic power controlling techniques with high efficiency were designed and implemented. They were operated based on the phase control mode, in both techniques a common thyristor family device, silicon-controlled rectifier (SCR), and triode alternating current (TRIAC), as well diode alternating current (DIAC) were used. These techniques could be commonly used for controlling the power consumption of different life applications, illumination, and ventilation systems, as an example.
In this concern, the performance of the proposed power devices in electronic control techniques were investigated experimentally, theoretically and simulation using the well-known National Instruments Multisim (NI Multisim) and Proteus to confirm the obtained experimental results of the work.
Finally, it could be concluded that, for both manual and automatic illumination controlling techniques the power consumption could be saved by about 27% of the consumed power. The fan speed in ventilation controlling techniques could be controlled according to the ambient room temperature. Moreover, in case of manual illumination and ventilation controlling techniques, the light intensity and the fan speed could be controlled by the adjustment of the controlling resistor, which leads to more human effort. While, on the other hand, automatic controlling techniques could be obtained using LDR and NTC thermistor sensors for illumination and ventilation, respectively, which reduced the human being effort as well saving energy. As a result, the automatic technique could be employed in smart home applications. Thus, maintaining a comfortable environment requirement specially for challenged individuals with mobility difficulties.