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Date: 17-10-2020
1445
Date: 22-10-2020
1808
Date: 23-10-2020
1547
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JUNCTION CAPACITANCE
Under conditions of reverse bias, a p-n junction can act as a capacitor. A special type of diode called a varactor (a contraction of the words variable reactor) is manufactured with this property specifically in mind. The junction capacitance of a varactor can be varied by changing the reverse-bias voltage because this voltage affects the width of the depletion region. The greater the reverse voltage, the wider the depletion region gets, and the smaller the capacitance becomes. A good varactor can exhibit a capacitance that fluctuates rapidly, following voltage variations up to high frequencies.
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"عادة ليلية" قد تكون المفتاح للوقاية من الخرف
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ممتص الصدمات: طريقة عمله وأهميته وأبرز علامات تلفه
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المجمع العلمي للقرآن الكريم يقيم جلسة حوارية لطلبة جامعة الكوفة
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