Depletion Mode Transistor

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Discussion Overview

The discussion revolves around the use of internal versus external substrate connections in depletion mode transistors. Participants explore the implications of these connections, particularly in relation to the "body effect" and its significance in circuit design.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants inquire about the functional differences between internal and external substrate connections in depletion mode transistors.
  • One participant asks for examples of devices where these differences are observed and mentions the "body effect" as a relevant consideration.
  • Another participant expresses uncertainty about the differences in function and notes a lack of available reading material on the topic.
  • A later reply reiterates the uncertainty regarding the significance of the "body effect" and questions the reasons for needing access to the body connection.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the differences between internal and external substrate connections, and multiple viewpoints regarding the significance of the "body effect" remain unresolved.

Contextual Notes

Limitations include a lack of detailed definitions and explanations regarding the internal and external connections, as well as the body effect. Participants have not provided specific examples or schematics to clarify their points.

Raymond31415
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When do you use an internal substrate connection vs an external substrate connection on a depletion mode transistor?
 
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Raymond31415 said:
When do you use an internal substrate connection vs an external substrate connection on a depletion mode transistor?

There are a couple of considerations. Can you say where you have seen the differences? On any devices in particular? Have you heard of the "body effect"?

http://en.wikipedia.org/wiki/MOSFET

.
 
I don't know what the difference in function is between an internal vs an external connection, I had just happen to see a schematic for both online, and I haven't been able to find anything to read about one vs the other.
 
Raymond31415 said:
I don't know what the difference in function is between an internal vs an external connection, I had just happen to see a schematic for both online, and I haven't been able to find anything to read about one vs the other.

Did you read the link that I provided? What is significant about the "body effect"? Why would you sometimes want access to the body connection?
 

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