Comment by periblepsis on Spread spectrum question
Are you using a spread spectrum clock? Because while these do spread out the frequencies, their curve looks about like this. They just spend less time than 100% at any one place. Do you feel your...
View ArticleComment by periblepsis on Looking to Build Relay out of Transistors
@LobsterZelda Rather than asking questions of us, why not provide your specifications? It saves a lot of game-playing. Why not tell us what you need, rather than have us guess about what you are...
View ArticleComment by periblepsis on Give me the answer for 1 st question
@StainlessSteelRat And here I got 25.85% using the dominant pole pair in order to compute \$\zeta\$ (ignoring the real value far to the left of them) and without feeling as though I fully understood...
View ArticleComment by periblepsis on Differential pair to single ended
Does Figure 3(a) here help at all?
View ArticleComment by periblepsis on Converting from 100 Ω differential pair (from a...
Does Figure 3(a) here help at all?
View ArticleComment by periblepsis on Help Explaining Single Sideband (SSB) vs. Double...
RiFF RAFF: Do yourself a favor and ignore the negative frequencies. Now just think of a single transmitter frequency as a very high pitch "tone." A 1 MHz tone? That can be transmitted to a remote site....
View ArticleComment by periblepsis on How can I continue to reduce this block diagram to...
ioftenfeellonely: Are you permitted to use algebra? It's easy. Is that what you are trying to move towards as a next step? Or not? The whole problem is actually pretty easy using algebra. I don't do...
View ArticleComment by periblepsis on How do I apply block reduction techniques to the...
@Thxforhelping I had only the impression that it was recommended. Not required. Now I know. Glad it was of any use, though. So not a complete disaster. ;)
View ArticleComment by periblepsis on How to Achieve 0.1 Hz Resolution from 0 to 10 kHz...
@kumar I don't know enough about your application, but thanks for what you've provided. It looks like you want 10 ppm. Or better. And that's a lot to expect., Common and cheap crystals are often spec'd...
View ArticleClik here to view.
Answer by periblepsis for 2 stage BJT wideband amplifier with automatic gain...
Your highest frequency is into RF range. This means that the \$\frac{\text{d}}{\text{d}t}V\$ is very high. Even trace capacitances will require significant currents. This includes the \$\approx...
View ArticleComment by periblepsis on Why couldn't instant sampling exist?
Assuming your question is more theoretical, it may be better asked in physics stackexchange; there is good theory involving the Boltzmann's Factor and quantum mechanics. There are two points of...
View ArticleComment by periblepsis on Can this simple receiver work?
Rajesh, I made something like that as a child for local 50 kW AM broadcast stations near 1 MHz and received well. But I used a galena crystal from a high quality mine in South America, mounted it into...
View ArticleComment by periblepsis on In voltage divider biased amplifier circuit like...
I don't see a good way to write an answer. You write, "but why would it be close to zero if it is a short circuit?", referring to the first diagram. I guess you imagine a "short" since the base is tied...
View ArticleComment by periblepsis on RC/RL/RLC circuits
@Amarjeet You will need to say more about math than the institutions where you learned some. Talk about the areas. For example, are you able to solve some simple algebra problems? Can you solve a pair...
View ArticleComment by periblepsis on PSpice error floating net
@ChesterGillon I discuss the reason here both with words and also a reference to the Rank-Nullity Theorem, which provides the mathematical reason for directed graphs like this. Not sure 5 words would...
View ArticleComment by periblepsis on Understanding Voltage and Current Phase Difference
Ohm's Law holds with reactive components, too. You just need to move from domain \$\mathbb{R}\$ to domain \$\mathbb{C}\$. For non-linear (often \$\ln\$ or \$\exp\$ or \$x^n\$ in nature), it's done by...
View ArticleComment by periblepsis on The two-stage amplifier output waveform is not...
@kkk Signal generator with \$50\:\Omega\$ output impedance? Oscilloscope with 10X probe and \$10\:\text{M}\Omega\$ and \$10\:\text{pF}\$ impedance? Or some other output load?
View ArticleComment by periblepsis on Improved Howland pump circuit analysis
@DummyDum VG1 is more along the lines that were in my head, except that it is 10 ns wide (100 MHz) and not 300 MHz. You are actually looking for something more like VF3? What ever happened to 300 MHz?
View ArticleComment by periblepsis on High speed comparator recommendation
I'm just throwing mud against the wall, but here is something kind of fast. Depends on the load, of course. I haven't ever used (or looked for) an ECL Schmitt trigger. But that might be another search...
View ArticleComment by periblepsis on Can I use 304 stainless steel bolt to connect busbar?
Yes. So long as the conductivity of the bolts aren't an issue and they only play a mechanical role, then the goal is just putting lots of pressure against copper busbar surfaces in contact. So I think...
View Article