Recent content by quaker

The last 2 equations are simply V2 with the known values plugged in. As for V1, I solved that by analyzing the left-most op-amp by itself. Using nva: \frac{0-Vee}{(Rphoto+R7)} + 0 + \frac{0-V_1}{R1}=0 \frac{-Vee}{(Rphoto+R7)} = \frac{V_1}{R1} \therefore \frac{-R1}{(Rphoto+R7)}*Vee=V_1 I went...

Hmm, which output? I'm not sure I see another equation for V2 that includes those unknown resistors.

I'm working with this circuit to design an ambient light meter. http://img201.imageshack.us/img201/6479/cktyu0.jpg We were given steps to go about solving for different values of the components in the circuit. First we're to solve for the gain and thus V1 which I found to be...

Yeah, your equations work fine. Check your algebra. He shows the partials in the first post, y = 4x-12 and x = 3y-9

Your supermesh equation is incorrect. Starting from the lower left it should be 1k*i_4 + 1k*(i_4 - i_1) + 2k*(i_3 - i_2) + 1k*i_3 = 0 Because of that, your assumption about I_0 is also wrong. The current in that branch is flowing between meshes 2 and 3, so the current is a combination of the...

Yes, that is the only current going through that corner.

You can't assign range values to n and m like you're doing there. What you'll want to do is loop through the array, the same way you did to add the values, except this time the body of the loop will check for the range conditions on i and j. (You don't really need new variables n and m) For...

Using rand()%201 would give you numbers from 0-200, inclusive. When you find an appropriate i and j, you can use cout << A[i][j]; to display the value held in that position.

I am having trouble finishing this problem. I am supposed to first derive an equation for V_5 in this circuit: http://img292.imageshack.us/img292/599/picture3qy2.png I applied a Delta-Wye transformation to get here: http://img292.imageshack.us/img292/9672/workot8.jpg From there I am...

I have a quick question about the wording of a problem I have. It's in two parts. The first part asks me to find the flux of a given vector field through the closed cylinder of given dimensions. That's fine, no problem. The second part then asks me to find the flux of the same field...

I get it now, that makes sense. Thanks for your help!

Yes, but I'm not sure how to turn the resulting equations for v_1 and v_2 into their conditions for no collision.

Well, I get those equations plugging in what's given, but how would I then solve for the conditions on v1 and v2? This is so confusing without numbers to work with. :confused:

I'm having trouble wrapping my head around problems without any given number values. All of the book problems I've done so far have had number values for position or velocity etc and those fit nicely into equations that could be solved for other variables. I was recently given a set of sample...