Depletion Mode Transistor

[Raymond31415]

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

 

[berkeman]

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

.

 

[Raymond31415]

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.

 

[berkeman]

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?