All Questions
Tagged with semiconductors transistors
118
questions
2
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4
answers
6k
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What exactly is a potential barrier in transistors?
Here it says that:
When a transistor is OFF, there exists a potential barrier between the source and the drain..
I don't know exactly what a potential barrier is. If I had to make an educated ...
- 377
0
votes
2
answers
390
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How is the PN junction formed?
I am confused about a couple of points:
When the electrons diffuse from N side to P side, and holes diffuse from P side to N side, negative charged region is formed at the junction in P type and ...
- 91
-2
votes
1
answer
128
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In digital electronics, is the essence of "on/off" states driven solely by chemically-doped silicon? [closed]
I believe that in digital electronics, such as those measured in binary, we use semiconductor-doped amplifiers to switch electrical signals around. In the simplest sense we could split one analog ...
- 1
13
votes
2
answers
2k
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Why are BJTs more reliable than MOSFETs under severe weather conditions?
I read in a textbook (Microelectronic Circuits by Sedra and Smith, pg. 494, (2010) sixth edition) that BJTs are preferred by the automotive industry due to their reliability under severe weather ...
- 352
2
votes
1
answer
477
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Potential drops in BJT in CE configuration?
In a simple p-n junction diode, there is a \$V_{eq}\$, the potential difference between the p-doped and the n-doped portion of the diode. When an external potential \$V\$ is applied in forward bias, ...
- 169
3
votes
1
answer
294
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Would shooting laser or UV light at an inverter make it permanently slower?
I'm studying the topic of cloning electronic circuits for my research. And I have a scenario as the following:
Chip A has two ring oscillators (RO1a and RO2a). And RO1a is faster than RO2a.
Chip B ...
- 53
5
votes
1
answer
1k
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NPN is physically symmetrical yet the model isn't? [duplicate]
It just strikes me as very odd that all representations of the actual physics of NPN transistors in textbooks is perfectly symmetrical, yet neither the diagram used to represent them nor the ...
- 787
5
votes
6
answers
430
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is any other technology than semiconductor transistors or vacuum tubes that can be used as active devices?
I am curious to know if one can amplify a signal or make nonlinear active distortion to an electric signal without semiconductor transistor or vacuum tube technologies?
- 231
0
votes
2
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313
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What is the main Computer Memory Addressing Mechanism for Semi-Conductor Memory? [duplicate]
Most semiconductor memory is organized into memory cells or bistable flip-flops, each storing one bit (0 or 1).
How exactly are the needed '1's or '0's taken from Memory? What mechanism or algorithm?
1
vote
1
answer
169
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Temperature dependance of IGBT max collector current
I have an IGBT (datasheet), that I am using as a switch for a coilgun. How would I calculate the maximum pulse collector current in function of the ambiant temperature and time?
Also, if we're ...
- 111
4
votes
1
answer
3k
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Transistor's saturation state
I've a question concerning the function of a transistor in the saturation state. In a Common Emitter transistor (n-p-n), at the saturation state (when collector current maximum), both junctions are ...
- 151
2
votes
1
answer
389
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Physics/chemistry understanding of PMOS and NMOS to form CMOS
Can anyone provide me explanations or links that provide a clear explanation of what atoms/molecules are in p-type and n-type (PMOS/NMOS) and how they interact to create actions?
- 481
14
votes
1
answer
8k
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Where are the depletion PMOS transistors?
In school, I was taught about PMOS and NMOS transistors, and about enhancement- and depletion-mode transistors. Here's the short version of what I understand:
Enhancement means that the channel is ...
- 17.6k