Recent content by exis

Can someone please explain to me with what reasoning RL and RC are taken to be in parallel when calculating Vo for any decrease/increase in IC (DC) due to isig (ac) Thank you

zgozvrm, thank you. that was exactly what I was having trouble with. the way you drew it makes it very clear. ((6||3) + 2) || 4 = 2ohms = Rnorton Thanks a lot for taking the time to do this

Well, usually to calculate the thevenin/norton resistance the load is replaced by an open circuit and the source by a short circuit. then i imagine a current entering the circuit from one of the terminals where the load was connected. using this technique, I can't get the correct answer, that...

Fair enough. However I still don't get why the 2ohm and 4ohm resistor are not taken in consideration

I'm having trouble finding the norton equivalent resistance for the attached circuit. I reasoned that once you short the source, you just get the (3ohm+2ohm) in parallel with the 4ohm resistor. However the answer I'm getting is not the one given in the book (I get 2.22ohms, when it...

Yes it is.. the final current is 4.2mA. But just like you said, it certainly makes more sense that the initial 8mA is a result of some external source that is not being shown.Thanks a lot for replying berkeman :)

While going through some textbook problems I encountered several circuits that had initial conditions like the one attached where there's an initial current of 8mA when the switch is open. What's the source of that current? how can there be a current if the circuit is open...

Phrak, how did you work it out exactly please?

I assumed the diodes are ideal, therefore zero voltage drop across them. I found the peak diode current exactly the way you just said and the answer I got isn't correct. Peak voltage = 50V, R=4300ohms, therefore I_max = 11.6mA. The answer i should be getting is 127mA

Homework Statement A 50V peak AC signal at 50Hz is fed to a 1:1 turns ratio transformer full-wave rectifier circuit. The full-wave rectifier waveform is smoothed by the use of a capacitor C=47uF, R=4.3kohms. I need to calculate the peak diode current (however before this i was asked to...

Homework Statement A designer requires a shunt regulator of approximately 20V. two kinds of zener diodes are available: 6.8V devices with r_z=10ohms and 5.1V devices with r_z=30ohms. For the two major choices possible, find the load regulation. In this calculation neglect the effect of the...

Hi, I'm a freshman studying electronic engineering (A 3 year program in my university). Lately I've been going through a lot of the posts here on this forum and I couldn't help myself from wondering where I could find myself in 3 years time or maybe more if I decide to go for a masters...

C it is then... Thanks for replying berkeman

Hi, I'm a freshman in an electronic engineering program in university. Throughout the course we're supposed to learn how to program using C. I was wondering if it would be a good idea to learn C++ on my own instead. From what I gather, C++ is a superset of C however I've also been told that...

Since both my country and UK are in the european union the tuition fees would be as if I were a UK citizen. However, I didn't want to limit my question to just universities in England. I wouldn't turn down any other university with a good reputable masters program in nanoelectronics (or any...