Posts by coquelicot
Eureka! thanks to the article cited in the question, I've finally understood the matter. I will describe here the general procedure for computing the network parameters of a grounded two port devi...
While your basic idea seems fine, I will not enter into this matter, especially after Olin has said he will. Instead, I will give some other ways to do that, that may be useful in other circumstan...
It's kind of surprising that the TVS diodes dumping ESD into the GND plane don't affect the microcontroller; however, if the shield dumps ESD into the GND plane it has a very strong effect. Th...
Answer to question 1: First, you need p-mos and not n-mos, as you are switching the circuit from the above. Second, it is better and simpler to parallelize mosfets for big current switches; this w...
That depends on whether you are just building something for yourself, say a prototype, or if you are designing a product for mass distribution. In the later case, you are subject to probability law...
I answer to myself because I believe this subject is interesting and not very well understood, even to professionals. Also, I want to point out that this answer is the product of my own investigati...
Despite there are many filter calculators available on the web, I still have difficulties to translate what I need into calculator design parameters. For my application, I need ideally a high pass ...
Why does the Darlington or Sziklai configurations need complementary transistors? For these configurations, when should I use complementary pairs and when could I use not complementary pairs ?
Well, here is was my logic tells me: The corrosion has caused a high impedance in the L2 wire, but there should be also a "short" between the L1 and L2 wire. So that the voltage between L1 and L2 f...
I'm actually an algorithmic engineer, not an electronic engineer. But your question is extremely general, and valid for every field of engineering. Also, it obviously depends upon the human and tec...
I think the bullet list in the current on-topic page is clearer and easier to understand. Admittedly, there are some "confrontal" bullets, but that's OK in my point of view. Sure, there are always...
Please, have a look at this thesis, from P. 12 to the end. The bottom line is that the Buttler-Volmer equation, which is in fact equation (13) derived in P. 12 to 16 (called by the author the elec...
What is your best suggestion for building a follower that would ideally satisfy the following spec: frequency: from 100 Hz (or lower) to 1 GHz input signal impedance: 1 Mohm input signal ampli...
I think your measurement instrument is fine. What is not is your understanding of resistance: there is nothing like this "resistance of water". In your case, the measured resistance depends on the...
@Olin. I already read the help/papers doc you pointed out. And that's why I think a part of the papers are very far from the description there (except the "to educate" clause, at the most). As far...
I add my answer here because I think the other answers are incorrect or irrelevant: namely, the answer of Andy is nice after he has redrawn the schematic and changed the problem, answering to anoth...
I have finally downvoted the post of Andy "Very short answer - get rid of downvotes on answers" despite it is rather close, in some respects, to my own views. Let me clarify myself. I've never said...
There is a mistake in the last line: $$\eqalign{V_{C_1}(t) &= V_1(t) - RI_{C_1}(t) \cr &= \sin(t) - \dfrac{\sin(t) + \cos(t) - \mathrm{e}^{-t}}{2} \cr &= \dfrac{\sin(t) - \cos(t) + \m...
Here is a video of the AN/PRM10, and here is a schematic (I believe the image can be zoomed): As most commercial grid dip meters produced in the past, this one possesses several functions in ad...
It is well known that it is difficult to filter the noise generated by switching power supplies, and this difficulty increases as the PSU is supposed to deliver large currents. For example, in a us...
Moderator Note If this site were mature, this question would be closed because it solicits opinions, or is too specific about particular models. In the interest of site activity, answers are being...
No need to power the led with 5V. 3.3 V should suffice! Before I come to problem of regulating the current with only 3.3V, I wish to state some general simple constructions. Technically speaking,...
I've upvoted the post of Olin because I think this is obviously better than the current situation. Nevertheless, this does not completely solve the problem of trolls using multiple accounts. I thin...
Looking at the "papers" category, I found that several papers do not fit the very purpose of this category (that's the reason I've not upvoted them). Nevertheless, they are relatively well written,...
I am trying to test a AD8307. Here are my connections: (pins not shown are left unconnected, and also pin 8). I get a quiescent output voltage at pin 4 of about 850 mV with respect to ground, w...
- ← Previous
- 1
- 2
- Next →
