https://file.aiquickdraw.com/mathbot/file/1727105186133g3h86n2m.jpg

Select the graph from following options which best describes the variation of transconductance of mosfet (gm) with applied gate potential (Vg) for a fixed drain bias.

The transconductance (\( g_m \)) of a MOSFET depends on the gate-source voltage (\( V_{gs} \)) for a given drain bias. The general behavior of \( g_m \) with respect to \( V_{gs} \) is as follows:

1. In the **subthreshold region**, when \( V_{gs} \) is low, \( g_m \) is very small or near zero.
2. In the **linear region**, as \( V_{gs} \) increases, \( g_m \) increases sharply.
3. In the **saturation region**, \( g_m \) reaches a peak and then starts to decrease as \( V_{gs} \) continues to increase due to short-channel effects.

From the given options:

- The **first graph** shows a rise in \( g_m \), reaching a peak, and then a drop-off, which is characteristic of MOSFET behavior when \( g_m \) is plotted against \( V_{gs} \) for a fixed drain bias.

Thus, the **first graph** best describes the variation of transconductance \( g_m \) with gate voltage \( V_g \) for a fixed drain bias in a MOSFET.

Would you like a more detailed explanation, or do you have any further questions?

Here are five related questions to explore:
1. What factors influence the peak of the transconductance \( g_m \) in a MOSFET?
2. How does the channel length of a MOSFET affect the transconductance?
3. What is the role of threshold voltage in the behavior of \( g_m \) vs. \( V_{gs} \)?
4. How does temperature impact MOSFET transconductance?
5. What is the difference between \( g_m \) in long-channel and short-channel MOSFETs?

**Tip:** Transconductance \( g_m \) is proportional to the derivative of drain current with respect to gate voltage, making it a key parameter for MOSFET amplifier performance.

Select the graph from following options which best describes the variation of transconductance of MOSFET (gm) with applied gate potential (Vg) for a fixed drain bias.

Explore how transconductance (gm) of a MOSFET changes with gate voltage (Vg) for a fixed drain bias. Learn about MOSFET regions of operation, including subthreshold, linear, and saturation regions. Suitable for undergraduate electrical engineering students.

Math Problem Statement

Solution

Ask a new question for Free

By Image

Math Problem Analysis

Mathematical Concepts

Formulas

Theorems

Suitable Grade Level

Related Recommendation