Although the MOSFET is a four-terminal device with source (S), gate (G), drain (D), and body (B) terminals, the body (or substrate) of the MOSFET is often connected to the source terminal, making it a three-terminal device like other field-effect transistors.n the case of an n-type switch, the body is connected to the most negative supply (usually GND) and the gate is used as the switch control. Whenever the gate voltage exceeds the source voltage by at least a threshold voltage, the MOSFET conducts. The higher the voltage, the more the MOSFET can conduct.
Causes of Glaucoma. Glaucoma causes include elevated eye pressure (called intraocular pressure or IOP) due to the eyeâs inability to drain fluid efficiently. A clear fluid called aqueous humor circulates inside the front portion of our eyes.
Glaucoma Causes and Symptoms. The causes of Glaucoma are not fully understood. The following paragraph is a condensed explanation of what is known, but other factors likely play a role as well. A clear fluid called the aqueous humor circulates inside the eyeâit is not part of the tears on the outer surface of the eye.