Complementary Metal Oxide Semiconductor (CMOS): With active load switching, the current drain with a low output is approximately equal to ID(sat). This may cause a problem with battery operated equipment. One way to reduce the…

N Channel Power MOSFETs or V-MOSFET or V-FET: N Channel Power MOSFETs - Power MOSFETs are usually constructed in V-configuration, as shown in Fig. 13.94. That is why, the device is sometimes called the V-MOSFET or…

Dual Gate MOSFET - N Channel Depletion Type MOSFET: Cross view of a dual-gate N-channel depletion type MOSFET is shown in Fig. 13.93. It acts as if two FETs are connected in series, as is…

What is MOS Capacitor? The metal-oxide-semiconductor MOS capacitor shown in Fig. 13.92 (a) is the heart of the MOSFET. The metal may be aluminium or some other type of metal. In most cases, the metal…

What is MOSFET Resistor?: DE-MOSFET can be employed as a resistor by connecting the gate to the source, as shown in Fig. 13.91 (a), so that gate-to­source voltage VGS is zero. E-MOSFET may also be employed…

Enhancement Type MOSFET - Construction, Operation and Characteristics: Although DE-MOSFET is useful in special applications, it does not enjoy widespread use. However, it played an important role in history because it was part of the…

Small Signal Model of MOSFET: If the small bulk resistances of the source and drain are neglected, the Small Signal Model of MOSFET and its equivalent circuit between terminals G (G1), S, and D is…

Depletion Type MOSFET - Construction, Operation and Characteristics: As we know already that when the gate is biased negative w.r.t. the source in an N-channel JFET, the depletion-region widths are increased. The increase in the…

FET as a Voltage Variable Resistor (VVR): FET is a device that is usually operated in the constant-current portion of its output characteristics. But if it is operated in the region prior to pinch-off (i.e.,…