Comment by periblepsis on 9V Battery Supply power for Op Amp
You can make a virtual ground. It's basically just a class-AB stage that drives the virtual ground. But it will be power-hungry. You will at least double (likely worse) the current draw on your battery...
View ArticleComment by periblepsis on Irregular behaviour of this RC circuit
qwertyqwq, Do you want to use two AA batteries? Or would you prefer using just one?
View ArticleComment by periblepsis on In a class A amplifier using a (BJT voltage divider...
Are you looking for a completely general set of equations that only assume that the transistor is in active mode? Or are you looking for rough back-of-envelope results that take very little time and...
View ArticleComment by periblepsis on Are iGPUs utilized in any way while using a...
I'm not familiar with AMD. Just older Intel up through P II. But the internal GPU should be connected to the registration station as a resource for microops in the re-order buffer. It's likely that it...
View ArticleComment by periblepsis on How does this boost converter circuit work?
Pretty nice description. And even in the case where the transformer core may saturate, which serves to more rapidly reach the point where Q2's base current is insufficient, the description remains...
View ArticleComment by periblepsis on Low or High Impedance Amplifier Design
Some 4CX1000A is the path for an RF linear, anyway.
View ArticleComment by periblepsis on Can I run a one-phase AC capacitor motor from a...
RSS, what's stopping you from using a reduction gearbox?
View ArticleComment by periblepsis on Transient analysis of RC DC circuit
May we assume that the voltage across each capacitor starts with 0 V?
View ArticleComment by periblepsis on Simplying a digital logic circuit to minimize...
@IbrahimRabbani 18 pretty much tells you exactly what to use. You are going to use two or more gates with a max of 10 among them, followed by exactly one 8. There's only one 8 to pick. So that's a...
View ArticleClik here to view.
Answer by periblepsis for What is the reactive power of a capacitive circuit?
The maximum current magnitude occurs at the zero-cross for the voltage. So the product is zero there. The minimum current magnitude of zero occurs at the voltage peaks. So the product is zero there, as...
View ArticleClik here to view.
Answer by periblepsis for Transient analysis of RC DC circuit
I've added some annotations for use with KCL:I labeled the top node as \$V_{_\text{IN}}\$ only because I felt like it. But it is your \$\mathscr{E}\$ source over on the left.KCL says:eq1 = Eq( v1*s*C +...
View ArticleComment by periblepsis on How to analyze common-emitter amplifier by...
Didn't read the linked paper. But the dynamic resistance (either \$r_e^{\:'}\$ or \$r_\pi\$) can be applied either at the emitter or the base. They both reflect the tangent slope at the quiescent point...
View ArticleComment by periblepsis on 3 buttons and 3 LEDs circuit with mutual exclusion
I designed and built one of these for a school, twenty years ago. Just used an Atmel (before Microchip bought them) AT90S2313, memory serving. Very simple assembly code. One cool thing is that there...
View ArticleComment by periblepsis on No output in LTspice
When you cut a wire node numbers may change.
View ArticleComment by periblepsis on How does an EV know the size of battery it has...
MrFibble, you've not responded to anyone. I'm going to assume you won't respond to me, either. But the US is litigious and auto companies have deep pockets. Batteries used in EVs can be quite...
View ArticleComment by periblepsis on Thevenin equivalent voltage of an AC source circuit
I don't know where the 8 comes from. It's a bit mysterious to me. You will have to look at the textbook and/or lecture notes to help me there. Perhaps someone else sees where the 8 comes in. But their...
View ArticleComment by periblepsis on how do tube filament resistors work on this Type 10?
Thanks for the reference. I was almost certain it was 80 m. But I see that it can be adapted to nearby bands. I also had figured it was a shunt hartley using copper tubing for L1. That tubing is hot...
View ArticleComment by periblepsis on Calculating Real Power Dissipation in a Series RC...
Just a quick skim and I think you are okay. If I suppose 100 kHz and 10 V peak value and your values above then I find that your final power equation arrives at the real part of 89.8301624 +...
View ArticleClik here to view.
Answer by periblepsis for Transient circuit analysis with additional source
initial thoughtsI often miss things when reading. So it could just be me. But I don't see any initial conditions being given in your question. Of course, the only possible initial condition would be...
View ArticleComment by periblepsis on audio amp with Equalizer
김다정, I'm not sure how good you are with English. But if it isn't your 1st language, you may not notice well that your writing may carry some connotations of demand and a sense of entitlement. With a...
View Article