Activity for watchmakerâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #295081 |
@#52935 Thank you for the link. On a first, quick scan I spotted one of my mistakes: I was assuming that the abundant electrons in the metal would be leaking into the semiconductor, but the link states it is the other way round.
Trying to understand why, I took a more serious look at the formu... (more) |
— | 10 months ago |
| Comment | Post #295081 |
Why would a metal to "**p**+" junction be ohmic?
With reverse voltage, electrons would be held back on the metallic (super hyper n+++doped) side while any electrons that should accidentally (thermal happening) pop up on the p-side would be instantly re-absorbed by the hungry holes. (more) |
— | 10 months ago |
| Edit | Post #295058 | Initial revision | — | 10 months ago |
| Question | — |
Understanding of basic semiconductors Trying to update my understanding of basic semiconductors. It has been a very long time since I seriously looked at semiconductors. The most basic semiconductor application is a diode. From Wikipedia, I see a picture: https://en.wikipedia.org/wiki/File:Twodiodestructures.png , and I'm not s... (more) |
— | 10 months ago |
| Edit | Post #294990 | Initial revision | — | 10 months ago |
| Question | — |
Questions about quantum computing ... apropriate here? I had a question on quantum-computing at physics, and I'm wondering if questions like that would be appropriate here. It is not exactly "Electrical Engineering" but very close to it. It would be well inside of scope if the implementations of qubits could be regarded as an electrical device ... (more) |
— | 10 months ago |
| Edit | Post #294846 | Initial revision | — | 11 months ago |
| Question | — |
Avoid voltage loss and protect FETs from static energy Old fashioned p-n junction devices suffered from a voltage drop (0.6V for Si, 0.2V for Ge, if I remember correctly). FETs and CMOS were the latest highlight back then, and highly prone to be destructed from static electricity ("don't touch with your fingers"). That does not look like a prob... (more) |
— | 11 months ago |
| Edit | Post #294835 |
Post edited: typo & (hopefully) better wording |
— | 11 months ago |
| Edit | Post #294835 | Initial revision | — | 11 months ago |
| Question | — |
Would that question about diodes and transistors be OK here? I'm fairly new here and I don't want to ask a question that is too basic or has a too obvious answer that everyone (except me) could find on the net. Old fashioned (to avoid "ancient") p-n junction devices suffered from a voltage drop (0.6V for Si, 0.2V for Ge, if I remember correctly). FE... (more) |
— | 11 months ago |
| Edit | Post #294703 | Initial revision | — | 11 months ago |
| Question | — |
Electrolytic capacitors: capacitors vs. batteries Capacitors are expected to obey ${\displaystyle C={\frac {Q}{V}}}$ very closely, so computations in RCL-networks can be done assuming impedance to be $j\omega C$. On the other hand, batteries (rechargeable or not) are assumed to keep up the same voltage as long as possible. It looks to me l... (more) |
— | 11 months ago |