Posts by Olin Lathrop
I don't have a real answer. This is just a suggestion for how to proceed. Look for amplifiers intended to drive 50 Ω cable. Sometimes the term line driver is used, even though that also means ot...
No. An inductance is an inductance. One way to look at an inductance is as an impedance that is a function of frequency: Zind = ωL = 2πfL Where Zind is the impedance magnitude of an inducta...
While input offset voltage is technically noise in the sense that it is something unwanted added to the signal, it is not included in opamp noise specs as far as I have seen. Think of the "noise" ...
Antennas are not lumped-parameter systems. They may be open circuits or shorts at DC, but this changes as the frequency goes up. They aren't just a bunch of wires anymore at the intended operatin...
To be clear and protect against possible future edits, here is the circuit being discussed: As you say, this is a differential to single ended converter. In this case, the MOSFETs have likely b...
To summarize the problem, you have 12 V battery packs that you don't want to change due to certifications, but you need to power a 48 V 4 A load. The battery system also needs to be compatible wit...
Your question is quite long, so it's not clear what exactly you are asking. It seems the main point is what Microchip means by Note 5 on page 7 of the datasheet: You are right, that makes no se...
I get a phase shift of 90 degrees between voltage of the capacitor and current through the capacitor which doesn't make sense it should be 45 degrees You don't need a whole circuit to see that the...
Since this is homework, I'm not just going to give you the answer. When all else fails, go back to first principles. That's what handy shortcuts, like using impedance, were derived from. In this...
Your basic idea is fine, but your implementation is not. C1 makes the whole thing not work, as it will block DC. C2 puts a burden on the switch. D1 would preferably be Schottky. I'll write a mo...
What is seems you really want to know is how to size a power supply filter capacitor, not what the input capacitance of something is. The objective is to keep the ripple voltage below some value. ...
I'm not going to get into how to model the PHY interface, but will try to explain why there are differences. The type of Ethernet you are talking about is transformer-coupled. The line itself is ...
Power makes sense for steady state conditions. A certain energy will be used over one second. Then the same energy will be used the next second. And the next second. If I told you that such a c...
Personally I'd rather have everyone use their real name and affiliation. That basically puts their reputation out there on anything they say. If you really believe in something, have the guts to ...
It is hard to know from a single static low-res picture, but my guess is that something caused a short across the high voltage lines. That could be a falling tree limb, a squirrel making an unfort...
This is usually done by driving the motor very slowly open loop at startup. The idea is that the rotor will follow the magnetic field. Once you think the rotor is in sync with the drive, you spee...
Linear systems lend themselves to analysis since they follow certain rules. Because of this, much analysis has been done and theory developed, so there is now lots to keep undergrads busy with. M...
The text values in the specifications section are always the real specs. Unless otherwise stated (and that's quite rare), graphs are suggested values, typical ranges, variations due to a single va...
Coquelicot's answer explains what is going on, so I won't duplicate that. However, one of the sources of confusion is that you are looking at the two waveforms in isolation. Your scope obviously ...
You are making this too complicated. The only thing that matters is the percentage mismatch between any two clocks on a CAN bus. You seem to imply that you are willing to guarantee the -10 °C to ...
Is the risk too great? That depends on parameters you haven't told us. How cost-sensitive is this product? What is the reliability expectation of the users? How mission-critical is its usage? ...
Your question is impossible to answer without carefully looking at the layout and schematic. However, from gut feel and experience, this smells like poor grounding design. Common mistakes: Not a...
Digital voltmeters generally display decimal digits. The resolution implied by that is not necessarily the same as the underlying binary A/D. Since voltmeters for human display don't need to be f...
It's still unclear what you are really asking, so I'll discuss the tradeoffs between low and high side switching of power to a load. Low side switching The main advantage of low side switching is...
A differential amplifier and a differentiator are two completely different circuit blocks. Differential Amplifier A differential amplifier has two inputs and one output. It takes the difference ...
