Question

What voltage is MOSFET?

Answer 1

A MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) itself doesn’t have a fixed "voltage" value. Instead, it operates based on different voltages applied to its terminals.

The key voltages to understand are:

1. Gate-Source Voltage (Vgs): This is the voltage difference between the gate and source terminals of the MOSFET. It controls whether the MOSFET is "on" (conducting) or "off" (not conducting).
   

   - For N-channel MOSFETs, a positive Vgs (greater than a certain threshold voltage, Vth) turns the MOSFET on.
   - For P-channel MOSFETs, a negative Vgs turns the MOSFET on.
   

1. Drain-Source Voltage (Vds): This is the voltage difference between the drain and the source terminals. It determines the MOSFET's ability to conduct current when it is "on."
   

1. Threshold Voltage (Vth): This is the minimum gate-source voltage (Vgs) required to turn the MOSFET "on" and allow current to flow from drain to source.
   

In simpler terms, the MOSFET is controlled by the voltage at the gate (Vgs) relative to the source. The actual voltages used in a circuit depend on the application and the MOSFET's specifications. For example:

1. Low-voltage MOSFETs may operate with Vds around 5V to 10V.
   

1. High-voltage MOSFETs can handle voltages in the range of 100V, 500V, or even higher.
   

Let me know if you need more details on how MOSFETs are used in circuits!