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Date: 23-10-2020
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Date: 8-5-2017
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Date: 18-10-2020
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PRINCIPLE OF THE JFET
In a JFET, the current varies because of the effects of an electrical field within the device. Electrons or holes move along a current path called a channel from the source (S) electrode to the drain (D) electrode. This results in a drain current ID that is normally the same as the source current IS. The drain current depends on the voltage at the gate (G) electrode. As the gate voltage EG changes, the effective width of the channel varies. Thus fluctuations in EG cause changes in the current through the channel. Small fluctuations in EG can cause large variations in the flow of charge carriers through the JFET. This effect makes it possible for the device to act as a voltage amplifier.
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علامات بسيطة في جسدك قد تنذر بمرض "قاتل"
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أول صور ثلاثية الأبعاد للغدة الزعترية البشرية
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مكتبة أمّ البنين النسويّة تصدر العدد 212 من مجلّة رياض الزهراء (عليها السلام)
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