Activity for Michaël Bensimhoun
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #280676 |
I've never thought about switching current regulators, despite this is quite natural and making sense. Thank you for instructing us again. (more) |
— | almost 4 years ago |
| Edit | Post #279580 |
Post edited: spurious text introduced mistakenly in the previous edit - errased |
— | almost 4 years ago |
| Edit | Post #279580 |
Post edited: minor mistake |
— | almost 4 years ago |
| Comment | Post #280117 |
Maybe. But I have to go now. I'll try to answer to this question tomorrow in the evening. (more) |
— | almost 4 years ago |
| Edit | Post #279580 |
Post edited: Note added |
— | almost 4 years ago |
| Comment | Post #279580 |
Thank you Pete. I'll think about how to include your note inside the article. (more) |
— | almost 4 years ago |
| Edit | Post #279580 |
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— | almost 4 years ago |
| Edit | Post #279580 |
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— | almost 4 years ago |
| Edit | Post #279580 |
Post edited: Some added precisions. |
— | almost 4 years ago |
| Comment | Post #279962 |
In place of a resistor, what is bad with a 3.3V Zener at the output of the oamp? the output current of the oamp is self limited, and the zener will certainly not burn at this power. Or better, a 100 ohm resistor followed by a Zener, to be totally religious. (more) |
— | about 4 years ago |
| Comment | Post #279886 |
@Olin. Your no 4 is fascinating. So, do you say that the cap should be connected to the ground pin of the part, and this later not connected to the the master ground, or do you say that the cap should be connected very close to the ground pin of the part, while this later may be connected to the mast... (more) |
— | about 4 years ago |
| Comment | Post #279886 |
@Lundin. Wha..? a cap is slow? it cannot help with ESD events? don't we have always V = Q/C, where Q is very small for ESD events? oh of course, if the cap has a high ESR, it may be too slow. (more) |
— | about 4 years ago |
| Comment | Post #279580 |
@Circuit fantasist. I have to mitigate my opinion about the link "What does this transistor circuit do". There are indeed interesting things there. I meant there are few interesting things that are not dealt in this article, if out of topic subjects are omitted. (more) |
— | about 4 years ago |
| Edit | Post #279580 |
Post edited: Small additions |
— | about 4 years ago |
| Edit | Post #279580 |
Post edited: more understandable |
— | about 4 years ago |
| Comment | Post #279580 |
Your third comment. It is unclear, and I cannot answer to it. Note: again this circuit works, so, I don't see what can be the point here. (more) |
— | about 4 years ago |
| Comment | Post #279580 |
2. Your second comment. Look at the first schematic in sec. C. 1. The transistor changes its collector emitter voltage VCE in order for the voltage between its base and Vout be equal to the Zener voltage. So, we have V_zener = 1 diode drop + R1 i, where i is the current through the transistor. That m... (more) |
— | about 4 years ago |
| Comment | Post #279580 |
@Circuit fantasist. 1. Your first comment: you are absolutely wrong. There is no problem with charging and discharging quickly capacitors, this is their function. If you mean that this may induce a large "inrush" current in the circuit, this is hardly a problem here because the capacitor is unlikely ... (more) |
— | about 4 years ago |
| Edit | Post #279580 |
Post edited: some added precisions |
— | about 4 years ago |
| Edit | Post #279580 |
Post edited: small mistake |
— | about 4 years ago |
| Comment | Post #279580 |
Regarding "the problem is that the voltage across this circuit will vary significantly with current load". No: you have to choose a sufficiently muscular transistor in order for the current to be independent of the load. This choice is a design question regarding the maximal load to handle. Notice I ... (more) |
— | about 4 years ago |
| Comment | Post #279580 |
@Circuit fantasist. Thx for your comments. "Regarding what does this transistor circuit do", I see nothing particularly interesting there (and even some incorrect things). Regarding your "decoupling with a diode between the cap and the base", I don''t understand what you are trying to obtain with tha... (more) |
— | about 4 years ago |
| Edit | Post #279554 |
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— | about 4 years ago |
| Edit | Post #279554 |
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— | about 4 years ago |
| Edit | Post #279554 |
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— | about 4 years ago |
| Edit | Post #279554 | Initial revision | — | about 4 years ago |
| Question | — |
Paper disappeared - and my rating as well Strange things occurring in the "papers" category: my paper entitled "the capacitance multiplier revisited" has disappeared, and my vote rating has been erased. Any insight ? (more) |
— | about 4 years ago |
| Edit | Post #279527 |
Post edited: |
— | about 4 years ago |
| Edit | Post #279527 |
Post edited: |
— | about 4 years ago |
| Edit | Post #279527 | Initial revision | — | about 4 years ago |
| Article | — |
The capacitance multiplier revisited Introduction A capacitance multiplier is an electronics technique that allows reducing the voltage ripple at some point in a circuit. It is often used in power supplies, after the rectification of the current and the storage capacitors. Its efficiency vs simplicity makes it a nice and attractive... (more) |
— | about 4 years ago |