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2019年6月15日 · In the textbook I'm reading (Fundamentals of Power Electronics 2nd Ed, Erickson and Maksimovic), the input voltage for several different types of converter circuits is labeled Vg. The textbook gives no explanation for what the g refers to.

Because the source is grounded, VGS (voltage between gate and the source) = VG (voltage of the gate). And then, it claims that because a higher VG accumulates positive charge at the surface of the gate, which repel the holes beneath the oxide layer, leaving the negative ions. So the charge density beneath the oxide layer is:

2016年3月16日 · There are three basic regions of operation for a MOSFET. Simplifying a bit, they are: Cutoff (Vgs < Vt) -- No current flows from drain to source.

Vc: Collector voltage for a BJT, similarly Ve, Vb may also be used for the emitter and base while Vs, Vd and Vg may be used for the source, drain and gate of FETs. Vr: reverse voltage, particularly when referenced to diodes. You may also encounter Vz used to indicate a zener voltage. Vf is used to indicate the forward voltage drop of the diode.

2011年7月26日 · I think I may have the definite answer to this. This naming comes from a 1963 IEEE standard 255-1963 "Letter Symbols for Semiconductor Devices" (IEEE Std 255-1963).

2016年5月7日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

2015年2月26日 · Vgs is the gate to source voltage. In the datasheet you'll find an absolute term Vgss this is the maximum voltage that can be applied between the gate and the source.

You are confused because the Vg voltage COMPARED TO "ground" (or the bottom, negative power supply rail) is zero, but compared to the source pin, it is actually negative few volts (Vgs = -x volts), and a P-channel MOSFET conducts or is turned on when the gate pin is a negative few volts (usually around -3V to -10V).

2021年3月10日 · Answer. Part A - Meaning of the curves and the operation point. The green (update: pale cyan) region is the "saturation" region.