Need Help with Circuit Problem? Let's Solve it Together!

Thread starter darrenabrown
Start date Oct 31, 2005
Tags

Calculation Circuit

Oct 31, 2005

darrenabrown

can some please help me with this circuit problem? i have no idea where to start or what to do

Last edited: Oct 31, 2005

Engineering news on Phys.org

Glass-like state leads to advancements in cryopreservation
Machine embroidery encodes skin-like tension lines in textiles, enabling mass-customizable wearables
Living cement: Scientists turn bacteria-infused cement into energy-storing supercapacitors

Oct 31, 2005

berkeman

Admin

darrenabrown said:

can some please help me with this circuit problem? i have no idea where to start or what to do

Thread '3-terminal device external modeling'

Very basic question. Consider a 3-terminal device with terminals say A,B,C. Kirchhoff Current Law (KCL) and Kirchhoff Voltage Law (KVL) establish two relationships between the 3 currents entering the terminals and the 3 terminal's voltage pairs respectively. So we have 2 equations in 6 unknowns. To proceed further we need two more (independent) equations in order to solve the circuit the 3-terminal device is connected to (basically one treats such a device as an unbalanced two-port...

View full post »

Thread 'Question about the voltage between two charged capacitors'

suppose you have two capacitors with a 0.1 Farad value and 12 VDC rating. label these as A and B. label the terminals of each as 1 and 2. you also have a voltmeter with a 40 volt linear range for DC. you also have a 9 volt DC power supply fed by mains. you charge each capacitor to 9 volts with terminal 1 being - (negative) and terminal 2 being + (positive). you connect the voltmeter to terminal A2 and to terminal B1. does it read any voltage? can - of one capacitor discharge + of the...

View full post »

Thread 'Weird near-field phenomenon I get in my EM simulation'

I recently made a basic simulation of wire antennas and I am not sure if the near field in my simulation is modeled correctly. One of the things that worry me is the fact that sometimes I see in my simulation "movements" in the near field that seems to be faster than the speed of wave propagation I defined (the speed of light in the simulation). Specifically I see "nodes" of low amplitude in the E field that are quickly "emitted" from the antenna and then slow down as they approach the far...

View full post »