![]() V GS 0) will attract electrons and repel holes, and this is called depletion because we are depleting the number of holes. The MOSFET is delivering current in a linear relationship to the voltage (V DS). The MOSFET is delivering a high amount of current, and changing V DS won't do much. The table below shows how to use overdrive voltage to understand what region of operation the MOSFET is in: Overdrive voltage is also important because of its relationship to V DS, the drain voltage relative to the source, which can be used to determine the region of operation of the MOSFET. By increasing V OV, I D can be increased until saturation is reached. V OV is important as it directly affects the output drain terminal current (I D) of the transistor, an important property of amplifier circuits. ![]() Due to this definition, overdrive voltage is also known as "excess gate voltage" or "effective voltage." Overdrive voltage can be found using the simple equation: V OV = V GS − V TH. The overdrive voltage is defined as the voltage between transistor gate and source (V GS) in excess of the threshold voltage (V TH) where V TH is defined as the minimum voltage required between gate and source to turn the transistor on (allow it to conduct electricity). Overdrive voltage, usually abbreviated as V OV, is typically referred to in the context of MOSFET transistors. ![]() ( October 2009) ( Learn how and when to remove this template message) Please help improve the article by providing more context for the reader. This article provides insufficient context for those unfamiliar with the subject.
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