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Register a new userThe Study Of CdSe optical Resistor's Characteristics, and using it in some electronic control circuits
دراسة مميزات مقاومة ضوئية من نوع سيلينيد الكادميوم CdSe و استخدامها في بعض دارات التحكم الإلكترونية
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Aِl-Baath University ورقة بحثية
Publication date
2016
fields
Physics
and research's language is
العربية
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Shamra Editor
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تم إحضار مقاومة ضوئية تجارية و تم التأكد من مكوناتها باستخدام جهاز الفلورة بالأشعة السينية ( XRF ) الموجود في مخابر قسم الفيزياء، فتبين أنها مكونة بشكل أساسي من سيلينيد الكادميوم CdSe قمنا بدراسة بعض المميزات الضوئية لهذه المقاومة.
A trading light dependent resistor has been brought and its components have been checked by using X-ray Fluorescence in the laboratories of physics department, it has been showed that it is consists of Cadmium Selenide (CdSe). We have checked some of it light characteristics.
References used
Watson.J,1989- optoelectronics.van nostrandreinhold,825P
Pieter. G,2005 -Fundamentals of Optical Science.Instructor,324P
Geoff E.F, 2008-Thermal history sensor based on glass- ceramics. Ronald,235P
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دراسة مميزات مقاومة ضوئية من نوع سيلينيد الكادميوم CdSe واستخدامها في بعض دارات التحكم الإلكترونية
It is the automatic control engineering knowledge forum, as it
should monitor and control the variables that interact in all
industrial processes to perform functions equipment installations
constructed for her. The automatic control system techno
logy has a
big role in easing the burden of daily life, and make them more
luxury. automatic control applications in most appliances, such as:
air conditioning and stoves, washing machines, etc.Automated
control concepts has been used in various areas of knowledge such
as biology, economics, sociology, medicine and education .
Monodispersed CdSe Nanorods nanoprticles with sufficient luminescence intensity have been prepared by chemical method in solution phase. CdSe as a core covered by Olic acide as an organic capping agent. The nanodots size obtained by two methods: dir
ectly from high resolution transmission electron microscopy (TEM) and using absorption peaks comparison with literature, the two methods are in good agreement. The optical properties and the luminescence intensity as a function of CdSe NRs concentration and the type of solvent (Chloroform and Toluene) have been investigated. The intensity of photoluminescence peak decreases and the peak shifts toward the blue energy side as the concentration reduced. The results show the relation between the polarity, the effect of surface, concentration, and the quantum effect on the optical properties.
Monodispersed CdSe nanoparticles with sufficient luminescence intensity have been prepared by chemical method in solution phase, and in two forms: CdSe as a core covered by Olic acide as an organic capping agent, while the second form is CdSe as a co
re covered by a layer of CdS (CdSe/CdS core shell). The nanodots size obtained directly from high resolution transmission electron microscopy (TEM) and absorption peaks using Paul Mulvaneys formula are in good agreement. The optical properties and the luminescence intensity as a function of CdSe concentration and the type of solvent have been investigated. The intensity of photoluminescence peak decreases and the peak shifts toward the blue energy side as the concentration reduced
The purpose of this research is to design and realization of an electronic circuitthat is able to control the water level in a tank. The circuit shows a tank water level in decimal numbers and controls the volume of water in the tank. So that when th
e level of water drops below a specific value that is preselected using a probe, the pump water works. When the water level reaches to another limit value, the pump stops working.We used for water level control a container which is made by transparent glass with volume of 15 L. the container is divided in nine levels. In addition to this purpose, because of large applications for realized electronic board, The circuit measures the speed of rotation of DC motorsin a wide range (0001 to 9999) cycles during a chosen period of time that ranges from 1 sec to 110 sec and display the speed of rotation in decimal numbers that appears on four displays. Moreover, the circuit contains a switch reset/start, for display clear and restart of measurement.
This study was carried out on samples of tap water, for several values of distance between the probes, and power supply. We found a quick response in showing levels and high efficiency in performance. We measured the number of special motor cycles for several values of the power supply during 30 s and 60 s, and the relation between the number of cycles and applied voltagewas drawingwe found it a linear relation.
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