Clik here to view.
Answer by periblepsis for Amplitude variation of RLC Bandpass Circuit
Assuming everything is ideal, even that \$25.3\:\text{pH}\$ device, then you need to make it so in the simulation. This means going into the inductor part and removing the series resistance, setting it...
View ArticleAnswer by periblepsis for Up counter with 7447
I really don't see how you can create a problem where there isn't one. It's already been considered and designed straight into the IC.Just tie the RBI input of the most significant digit to LO, chain...
View ArticleComment by periblepsis on I need some help, stuck in drawing endless circuits
@CrazyBite2007 You may need to divide yourself between two adjacent activities before returning to your problem. One of them is learning about which kinds of relevant functional blocks exist, how they...
View ArticleComment by periblepsis on What's a good method for detecting AC zero crossing...
@drew And it misses something else that you mentioned (in comments, by the way, which is the wrong place for something so fundamental and crucial), "... but more importantly the phase difference must...
View ArticleComment by periblepsis on Current Direction?
@Avocadoman Absolutely. You can use Cramer's Rule. Just move things around in preparation. I prefer to get the equations right the first time. So I follow the rule I discussed. Even if I needed to...
View ArticleComment by periblepsis on Node locations and KCL
Obviously, \$I_Z=\frac{V_B}{4\:\Omega}\$. Following the method I mentioned earlier: $$\begin{align*} \frac{V_A}{2\:\Omega}+\frac{V_A}{3\:\Omega}&=...
View ArticleComment by periblepsis on Reed Solomon Encoding FEC: what resource is the...
@atod What materials have you already examined and found unhelpful? The Wiki page on the topic appears to have many good references. An obvious choice might be "Reed-Solomon Codes and the Compact Disc"...
View ArticleComment by periblepsis on What's a good method for detecting AC zero crossing...
@drew And it misses something else that you mentioned (in comments, by the way, which is the wrong place for something so fundamental and crucial), "... but more importantly the phase difference must...
View ArticleComment by periblepsis on Choice of flyback diode
@DribbleNibble Consider giving an extra push in finding out more about the switch you have, if possible (per Tim Williams.) If that's not achievable, you may need to make some measurements to avoid...
View ArticleComment by periblepsis on LTC7060 simulation with unexpected results at...
Have you tried the same experiment using all of the parts in the example design? For one, I'd want to see that before taking on the task of reading a datasheet for you.
View ArticleComment by periblepsis on Can I connect two control signal to a relay coil?
If the point of the two grounded switches is to have a wire-OR arrangement, and if the switches are rated, correctly, then just remember that both switches must be off for the relay to be inactive.
View ArticleComment by periblepsis on Which method of adjusting the gain of an amplifier...
I'm very glad you added the bandwidth limiting ease in the first case because without it the noise will be much higher and the question is, after all, about noise and SNR. +1 And a practical...
View ArticleComment by periblepsis on Magnetic circuit length
How can you work out the magnetic path length without knowing \$\mu_r\$ for the core?
View ArticleComment by periblepsis on nichrome wire 0.25mm for cutting foam sheets
Ian, If you double the voltage you may increase the dissipation by a factor of 4. To get lower dissipation you can lengthen the wire. To get higher dissipation, shorten the wire. Design some...
View ArticleComment by periblepsis on LTSpice simulation of Class AB amplifier not...
James, Part variation alone is going to be a problem for the Darlington arrangement as it slightly less than doubles the junction variation over parts and over temperature, as well. Some significant...
View ArticleComment by periblepsis on How to find in this OP-AMP circuit the ODE...
The key is solving the inductor current as a function of time. That's because knowing it, then the output voltage must also be known, too, as a direct consequence. That also makes sense because the...
View ArticleComment by periblepsis on How to find in this OP-AMP circuit the ODE...
@Nate3384 I like "Fundamentals of Differential Equations", 9th ed., by R. Kent Nagle & Edward B. Saff & Arthur David Snider. It's well-organized and covers all the bases. Best wishes.
View ArticleComment by periblepsis on Halogen lamp replacement with an IR LED in an...
Kayra, 1.3 micron cuts things close. And there's a peak absorption in many glasses around 1.5 micron. So I wonder about moving a little longer still. Anyway, if you have already been using the halogen...
View ArticleClik here to view.
Answer by periblepsis for How to find in this OP-AMP circuit the ODE...
You know that \$v_{_\text{OUT}}-R_4\cdot i_{_{L_1}} -R_3\cdot i_{_{L_1}}=v_{_{L_1}}=L_1\cdot\frac{\text{d}}{\text{d}t}i_{_{L_1}}\$. But \$v_{_\text{OUT}}-R_4\cdot...
View ArticleComment by periblepsis on Why are identical passive components priced...
@jonathanjo He can speak for himself, but tantalum capacitors exhibit (or used to in abundance) randomly occurring scintillation. (The spontaneous dielectric breakdown at a weak spot in very thin...
View Article