Recent content by surajalok

anyone?

i don't know what i should do now? we don't know anything about w. I the book it said that examine det(A^T A) colonnvektors in A are u,v,w.

[u, v] = pi / 4 [u, v] is not pi/2 i said something in the book about det(A^T A)

Homework Statement Unit cell of a crystal lattice is a parallelepiped spanned by the vectors u, v, w vectors have lengths of 1, 2 resp3 (le). angles between the vectors is [u, v] = pi / 4 [u, w] = pi / 3 [v, w] = pi / 6 Determine the volume of the unit cell. Homework Equations How do...

but when the output voltage across a load is independent of the load they say in the book that out but acts as a ideal voltage source. and that the output impedance =0 (can someone explain why it shoulde be 0) and if it is zero then is is same as the diagram 1 I am talking about op Amp.

forgot the picture

Homework Statement Homework Equations Is 1 an ideal voltage source? Is 2 and ideal current source? i was solving a noninverting amplifier circuit and i was asked to find out output impedence. and in the first circuit output voltage was independent of the load resistence => output...

i just want to know why the get Rin =0 because WesleyPipes said i=v/R I=0 if R=--->infinity or if v=0 we know that v is zero but R can't be zero

can anyone help me

http://www.eit.lth.se/fileadmin/eit/courses/etia01/hambleysolutions4th/Chapter_14.pdf p 14 32 page 25 it says that Rin=0 but shouldn't it be infinity because current going into the op amp node =0. it is not the same question.

And one more question in an amplifing circuit is the input impedance =0 or is is it infinity or does it depend on the other facts. We have a voltage source directy connected to + or - on the amp but it woulden't be op-amp's inputs is = V1. for noninvering amp because R1 doen't exist in non...

is there any way to show that How about noninvering amp? But then should i use KVL at amp node=

what do u meen with use Use the voltage one? i tried using kvl on all the loops but coudn't solve. current goin into the + on the amp =0 and voltage is 0 between + and - on the amp. summing point constraint.

Homework Statement Analyze the ideal op-amp circuit shown in figure to find an expression for v0 in terms of vA,vB and the resistance values. Homework Equations if i label the voltage across R1 as V1 then vi know that v1=R1/(R1+R2) *v0 but i need one more expression for v1. i tried...

So i shoudn't use superpostion in this case. What do u meen by if you leave the dependent source in the circuit you end up with two nodes to deal with, at the points with the V1 and V2 labels. Write KCL for both nodes. You'll end up with two equations in two unknowns. Solve for the one you...