Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion

44. 

The word enhancement mode is associated with

[A]. tunnel diode
[B]. MOSFET
[C]. JFET
[D]. photo diode

Answer: Option B

Explanation:

MOSFET may be depletion mode or enhancement mode.


S. Balasubramaniam said: (Aug 16, 2016)  
Mosfet work both depletion and enhancement mode but FET works only depletion mode.

Akash said: (Dec 30, 2019)  
Like the previous JFET tutorial, MOSFETs are three terminal devices with a Gate, Drain and Source and both P-channel (PMOS) and N-channel (NMOS) MOSFETs are available. The main difference this time is that MOSFETs are available in two basic forms:.

Depletion Type: The transistor requires the Gate-Source voltage, (VGS) to switch the device "OFF". The depletion mode MOSFET is equivalent to a "Normally Closed" switch.

Enhancement Type: The transistor requires a Gate-Source voltage, (VGS) to switch the device "ON". The enhancement mode MOSFET is equivalent to a "Normally Open" switch.

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