Depletion Mode Transistor

AI Thread Summary
The discussion centers on the use of internal versus external substrate connections in depletion mode transistors, highlighting the importance of understanding the "body effect." Participants inquire about specific devices and schematics that illustrate the differences between these connections. The body effect can influence the threshold voltage and overall performance of the transistor, making access to the body connection significant in certain applications. There is a lack of clear resources explaining the functional differences, prompting further exploration of the topic. Understanding these connections is crucial for optimizing transistor performance in circuit design.
Raymond31415
Messages
16
Reaction score
0
When do you use an internal substrate connection vs an external substrate connection on a depletion mode transistor?
 
Engineering news on Phys.org
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?
 

Thread 'Underwater piezoelectric sensor array receive sensitivity'

Hi all I have some confusion about piezoelectrical sensors combination. If i have three acoustic piezoelectrical sensors (with same receive sensitivity in dB ref V/1uPa) placed at specific distance, these sensors receive acoustic signal from a sound source placed at far field distance (Plane Wave) and from broadside. I receive output of these sensors through individual preamplifiers, add them through hardware like summer circuit adder or in software after digitization and in this way got an...
View full post »

Thread 'Following up on the recent thread about Earth Resistance measurements'

I have recently moved into a new (rather ancient) house and had a few trips of my Residual Current breaker. I dug out my old Socket tester which tell me the three pins are correct. But then the Red warning light tells me my socket(s) fail the loop test. I never had this before but my last house had an overhead supply with no Earth from the company. The tester said "get this checked" and the man said the (high but not ridiculous) earth resistance was acceptable. I stuck a new copper earth...
View full post »

Thread 'Question about bonding ground and neutral'

I am not an electrical engineering student, but a lowly apprentice electrician. I learn both on the job and also take classes for my apprenticeship. I recently wired my first transformer and I understand that the neutral and ground are bonded together in the transformer or in the service. What I don't understand is, if the neutral is a current carrying conductor, which is then bonded to the ground conductor, why does current only flow back to its source and not on the ground path...
View full post »

Similar threads

Why does a transistor in saturation act like a short circuit?
Replies
5
Views
4K
Understanding the base emitter voltage in a common emitter NPN BJT
Replies
16
Views
9K
Question on MOSFET modes of operation
Replies
1
Views
966
How EMI is handled in IC fabrication?
Replies
14
Views
1K
Diode operation from reverse bias to zero bias
Replies
7
Views
2K
NMOS/PMOS Def: What Does "N" & "P" Stand For?
Replies
2
Views
1K
NPN transistor overheating even when used with appropriate parameters
Replies
11
Views
3K
I don't understand transistors in combinations .... Or maybe basics ....
2
Replies
68
Views
6K
Will the bleed resistors enable a shorter path to ground or not?
2
Replies
80
Views
5K
Is my understanding of the working principle of a solar cell correct?
Replies
1
Views
1K

Hot Threads

Recent Insights

Back
Top