Hw7 pblm1

I have a question regarding the magnetizing inductance of the transformer. In simulation do we have to specify the value of Lm twice once for transformer model and once for the CCM-DCM2 model?

HW7 Variables Question

Is the omission of V and R intentional in problem 2 of HW7?

DCM buck compensator circuits

Hello:

Are we supposed to design two compensators (one for Imin and one for Imax); or should we design only one circuit that meets the requirements for all values of current?

Thanks,
Alex

HW7 P1 b plot questions

I have the following questions setting up spice plots:

1.  What is the syntax which causes spice to generate three plots on a single figure where the first plot employs Vd = x, R1 = xx, second employs Vd = y, R1 = yy, and the third employs Vd = z, R1 = zz?

I tried:
.param Vd = {Vd}
.step PARAM Vd LIST x y z

.param R1 =  {R1}
.step PARAM R1 LIST 1 2 3

but I don't see multiple plots

2.  How does one remove the black back-ground in the splice plots?

Thank you,
CD

HW7 P1a

I am trying to verify my answers to part (a) in LTspice. I am having trouble with the CCM-DCM 2 model block, meaning I can't plot any reasonable output voltages. An astronomical voltage is being measured but not plotted. I only know this from putting the "probe" over the output and then looking in the lower left corner of the schematic window where there is some information displayed during a simulation. Using the HW4 CCM3 block, I have been able to check what I believe to be the CCM modes, but I'm at a loss for the CCM-DCM 2 block. Anyone else having problems?
- KT

Expression for D2 in HW6 Solution for 11-1-d

Hello:

Where does the expression for D2 (D2 = n*(Vg/V)*D) come from in the posted solution for 11-1-d?

Thanks

Midterm Exam Process

Professor Maksimovic,

The calendar on the course Web site says the the Midterm exam will be handed out in class on Friday, 8 March 2013.  Is this true, or will the exam be made available through D2L?

The calendar also says that the exam is due at the beginning of class on Friday, 15 March.  Will we be turning in our midterm exam solutions on paper on the 15th, or will we be submitting our exam solutions through D2L?

Thank you.