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 .
The MOV will conduct a large current to divert the surge current and protect the connected equipment. MOVs are the most common type of protection device use in surge protectors. Typical clamping voltages on surge protectors are 330, 400 and 500 Volts. MOVs wear out over time as they absorb power surges. The surge protector needs to be replaced when the green Protected indicator is no longer lit.