![]() ![]() Care must be taken when handling MOSFET transistors and devices.įigure 3. The layer of insulation is so thin that it can easily be damaged by static electricity. The difference is that the MOSFET has a very thin film of insulation (silicon dioxide) between the gate and the channel area. The MOSFET is similar in construction to the JFET. It is used extensively in digital circuits and memory circuits in computers. MOSFET ConstructionĪnother type of FET is the MOSFET. The amount of voltage applied to the gate will determine the current value from the source to the drain. Notice how the potential applied at the gate pinches off the flow of electrical energy.įigure 2. If a large potential is applied to the gate, a small current will exist in the channel between the source and the drain. ![]() If a small potential is applied to the gate, a large current through the P channel will exist. The current through the device is controlled by the gate potential. The physical construction of typical JFETs and their schematic symbols. The channel through the center of the device can be P- or N-type material.įigure 1. The channel is a path from the source to the drain. The gate is diffused into the channel material. ![]() These three parts are similar to the three main parts of a typical bipolar transistor. The three main parts of the JFET are the source, drain, and gate. The construction and symbols for the JFET are shown in Figure 1. There are two types of FETs, the junction field-effect transistor (JFET) and the metal oxide semiconductor field-effect transistor (MOSFET). A FET controls current in the source-drain circuit by the amount of potential applied to the gate. These cookies ensure basic functionalities and security features of the website, anonymously.The current through the collector-emitter circuit of a BJT is controlled by the amount of current in the base-emitter circuit. Necessary cookies are absolutely essential for the website to function properly. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. ![]() The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". Das Ablehnen einiger dieser Cookies kann jedoch Auswirkungen auf Ihr Surferlebnis haben. Sie haben auch die Möglichkeit, diese Cookies abzulehnen. Diese Cookies werden nur mit Ihrer Zustimmung in Ihrem Browser gespeichert. Wir verwenden auch Cookies von Drittanbietern, die uns helfen zu analysieren und zu verstehen, wie Sie diese Website nutzen. Von diesen Cookies werden die als notwendig eingestuften Cookies in Ihrem Browser gespeichert, da sie für das Funktionieren der grundlegenden Funktionen der Website unerlässlich sind. Diese Website verwendet Cookies, um Ihre Erfahrung zu verbessern, während Sie durch die Website navigieren. ![]()
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