The Role of Low Voltage MOS diodes

The Role of Low Voltage MOS diodes

MOS diodes transistors can be used as variable resistors and can also be used for amplification. Because the input impedance of FET amplifier is very high, the coupling capacitance can be small, and Electrolytic capacitor is not necessary. The high input impedance of Field-effect transistor is very suitable for impedance transformation. Commonly used for impedance transformation in the input stage of multi-stage amplifiers. Field-effect transistor can be conveniently used as a constant current source and also as an electronic switch.

The source and drain of some Field-effect transistor can be interchanged, and the gate voltage can also be positive or negative, which is more flexible than transistors. Field-effect transistor can work under very low current and voltage conditions, and its manufacturing process can easily integrate many Field-effect transistor on a silicon chip, so Field-effect transistor has been widely used in large-scale integrated circuits.

In general electronic circuits, it is usually used for amplifying circuits or switching circuits. In the power regulator circuit on the motherboard, the main role played by MOS diodes is to determine potential, which is commonly represented by "Q" and numbers on the motherboard.