Recent content by Xkaliber

Question about the coil: As you can see in the first attached picture of my previous post, this coil is basically two smaller coils glued together with a plastic washer in between. During testing, all four leads (two per coil) are accessible. We have to connect a lead from each coil...

You guys are awesome! Keep the suggestions coming. Right now the plan is to parallel at least 10 of these together for our final prototype so our total output current that goes to the battery will be more than what we have right now. Just a question about our voltage and current...

Hi all, Just a quick update with some additional questions. We have improved our design so our output for a single belt is now a 2.5V AC output @ 8mA. This should be enough voltage to rectify with a full wave bridge rectifier using Schottky diodes, correct? Also, the 2.5V and 8mA are only...

Well, the project is to build our own wind flutter generator. (http://www.popularmechanics.com/science/energy/solar-wind/4224763) The voltage is created by small magnets moving near a metal coil so it is not going to output a large value of power (or voltage). The output of 0.1 V was just a...

I am constructing a small wind generator for a college project. I want the 0.1 V AC output of the generator to charge a battery. To do this, I need to convert the current into DC. I am familiar with things like bridge rectifier circuits, but the smallest diodes I can find have a forward "turn...

Hi all, I am an EE senior in college and am taking a senior design course this semester before I graduate. It involves either choosing to undertake an educational project that one of the class professors suggests or using one of our own ideas. The course lasts a single semester and we are in...

So actually doing the cross product gives the equation: \left \| -z\hat{y} - y\hat{z}\right \|=2 So this is the equation is for a circle in in the y-z plane. Did I do that right?

Yeah, so basically any any vector with an x component of "2" satisfies part (a). However, even knowing that, I still cannot wrap my head around the surface created by such an equation.

Describe the surface defined by the equation: (a) \vec{r}\cdot \hat{x}= 2, where \vec{r}=x\hat{x}+y\hat{y}+z\hat{z}; (b) \left \| \vec{r} \times \hat{x}\right \|=2 For the first one, I know that is interpreted as the projection of the r vector onto the x-axis is equal to two...

Homework Statement \int_{-3}^{3}|t|e^{-jwt}dt The Attempt at a Solution I am not sure if I need to break this into two regions due to the abs value...

Hi all, I was tutoring someone in Algebra III today and encountered a problem that threw me for a loop. (cos x)^4 = cos (x^2) Is there a way to solve this algebraically?

lol, that was easy. I had in my mind that * was some sort of exponential value, not a more general operator. Thanks

I'm not sure. Is there some way you want me to rewrite this? m^*=(32-n)^*

Homework Statement Hi, I was doing some GRE practice tests and came across this question: for all number n, n^*=32-n (apparently where the asterisk is an exponent) They then give me two values, which are (n^*)^* and n, and I am to say whether choice 1 is a greater value than choice 2...

First, since the 3 amp current source is in series with R_2, the current through R_2 is 3A. Using Ohm's law, we find the voltage across R_2 to be 9 volts. Now, KVL around outer loop: -12V - 9V + v = 0 -> v = 21V KVL around right smaller loop: -9V + 21V - v_1 = 0 -> v_1 = 12V...