Questions tagged [semiconductors]
Most generally a class of materials that are neither insulators or conductors in their natural state, but which can be manipulated via doping or electric fields to change their conduction state. Silicon, Germanium, and GaAs are some usual materials. The term is also used to speak about devices that are made from such materials, for example, a processor from Intel can be called a semiconductor.
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Why should VS always be larger than VIH? [closed]
Why is VS always larger than VIH? What are possible issues?
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How can you measure voltage differences less than thermal voltage (~26mV at room temp)?
If thermal voltage is the average voltage of any given electron relative to the voltage at ground state, and this presumably fluctuates, how can you make any measurement on a circuit more accurate ...
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Two diodes connected in opposed way show different results (simulation vs physical circuit vs simulation)
I am confused about this circuit found in Electronic Devices and Circuit Theory By Robert Boylestad 10th Ed.
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I don't understand why D1 (left diode) has a Vd1 = 0v in equivalent circuit:
When I ...
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What kind of PLL is typically used for the digital logic in high-frequency ASIC's? [closed]
Want to generate clocks up-to 2GHz from the PLL internal to the ASIC for the critical data-path logic, please advise. Thanks!
Looks like there are wide variety of PLL's, dithered, multiphase, Fs, etc. ...
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What does "strobe" mean in the context of semiconductors?
I was reading the data sheet for SN7425, and it calls the semiconductor a "Dual 4-Input NOR Gates With Strobe"
What does it mean by "Strobe"? Does it affect input/output?
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Origin of the term "doping" in semiconductors
Is there a known origin/etymology for using the terms "doping" and "dopants" when describing the process of introducing impurities to semiconductors? I have never been able to find ...
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What is / how do I find the general ratios of all of the materials used in a cmos chip?
I am doing a life cycle assessment of a CMOS chip. But I am struggling a lot in finding the general ratios or quantities of the materials used in a chip, which is necessary for calculation of ...
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How to conduct temperature variant EM simulations in HFSS?
I want to conduct temperature variant EM simulations in HFSS i.e. simulate s parameters of a CPW at various temperatures. I am using a temperature variant material using thermal modifiers. I have also ...
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A problem from shift in the fermi energy level
if the effective mass of holes in a semiconductor is 5 times that of the electron, at what temperature would the fermi level shift by 15% from the middle of the forbidden energy band? (given that, eg =...
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A problem regarding shift in the Fermi energy level [duplicate]
The effective mass of holes in a semiconductor is 5 times that of the electron, at what temperature would the Fermi level shift by 15 % from the middle of the forbidden energy band (given that, eg = 1....
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Adapter for a function generator output
I want to order this adapter, but I can't find it on the web. Can anyone please confirm the exact name of this adapter for a function generator having a channel output and terminals for a DC power ...
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Simple circuit to bypass preamp when battery fails
A guitar has an on-board battery powered pre-amp between the pickups and the output jack. This is great until the battery fails, when it goes dead until the battery is replaced.
I would like to have a ...
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Jump on varistor I/V curve when "passing" through max. leakage current region to max. clamping voltage region?
I'm taking a course on semiconductor physics and another on something like "usage of electronic devices". On both I've come across the I/V curve on a varistor, this is:
I cannot find the ...
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Noise in classical quantum transmission
In classical quantum transmission, we introduced a scattering model that includes two components: free projection and collision
Now, in this figure, this model is introduced that when it goes up in ...
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BJT transistor working and construction
Why is electron concentration zero at collector side of the base in BJT transistor? And if electron concentration decreases with distance and becomes zero at the end base region how can it produce ...
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