mean. n. 1. Something having a position, quality, or condition midway between extremes; a medium. 2. A number that typifies a set of numbers, such as a geometric mean or an arithmetic mean.he antilog of the mean of the logarithm of the calculated values, the same as the n th root of the product of the values. It is often a more useful mean for growth curves.
Threshold Voltage Threshold voltage, V, is defined as the minimum gate bias which can form a conducting channel between the source and drain. For power MOSFETs, it is usually measured at the drain-source current of 250uA. Gate oxide thickness and doping concentration of the channel can be used to control the V .
You will usethe MOSFET as a variable resistor and as a switch.BACKGROUNDThe MOS (metal-oxide-semiconductor) transistor (or MOSFET) is the basic building blockof most computer chips, as well as of chips that include analog and digital circuits. In this lab,we will work with what is called an n-channel MOS transistor. The internal structure andoperation of this device, as well as of its complement, the p-channel MOSFET are studied insemiconductor device courses.