Recent content by r19ecua

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    How can I determine the maximum load on a surface?

    I'm trying to determine what equations I can use in order to calculate the maximum load (in pounds) across a sheet of plexiglass. Could anyone help me look in the right direction? This is just a sheet that's 10" x 10" x 1/8", that's held by 4 screws. You see, my project involves placing my...
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    Testing if a multiplier is doubling frequency

    OK, I finally have the frequency being doubled. I didn't draw it, but the clip for my function generator is grounded... This is the circuit I constructed: my output waveform: The frequency for my output (CH2) continues to fluctuate between 1 ~ 2kHz. The result is also smaller than expected...
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    Testing if a multiplier is doubling frequency

    OK, this is my actual circuit: I have 2 different sources putting out 15V. If you refer to the datasheet there are two inputs.. a VS+ and a VS-. In the picture, I have for both inputs, a +15V going through them. The negative terminal of these two inputs are placed on the same rail and are...
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    Testing if a multiplier is doubling frequency

    The waveform I posted is an actual test. I only drew up the circuit via simulation software just so you all could see what I put together. If I were to simulate the schematic on multisim, the frequency doubles. When I put it into practice (by building it the way I initially posted), my...
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    Testing if a multiplier is doubling frequency

    My first post is the circuitry I was rolling with, the schematic followed soon after.. The VDD is suppose to be the Vs 15V and the ground rail is coming from the negative terminal of the power supply. The problem? I just want to see the frequency doubled using a multiplier (AD633) with X2, Y2...
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    Testing if a multiplier is doubling frequency

    That's what I wanted to make sure of! In order to meet the +/- 15V rail requirement, I'd need a +15V rail and a - 15V rail, yes? So 2 different sources and a separate rail for ground, but I did this and my frequency is not doubled. I had used a red lead for both Vs inputs (+/-) and grounded...
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    Testing if a multiplier is doubling frequency

    Apologies! I'm using an AD633 with Vs = +15V and -VS = -15V.. X2 = Y2 = Z = 0 Here is the data sheet:
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    Testing if a multiplier is doubling frequency

    Here is my circuit I'm trying to double the frequency of my input to my output. k = 1/10 V For example: input is VmSin(2\pi1000t)/10 Vo = (VmSin(2\pi1000t))^2/10 Output should be Vm^2/20 + Vm^2cos(2\pi2000t)/20 My oscilloscope isn't picking up on the doubling, so I know my circuit is...
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    Calculating Midband Gain for NPN BJT: Are My Results Accurate?

    Everyone, I understand what you are all trying to say. With this circuit, gain is less than 1, which means my input resistance is attenuating the output signal by a factor of 0.748. The circuit is not amplifying anything. This was a lab practice problem, I just wanted to know where my...
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    Calculating Midband Gain for NPN BJT: Are My Results Accurate?

    I can't change RS because that's the lab problem and I have no idea why I set all caps to zero, but I understand that CE = 0 is the incorrect way of expressing a short circuit. I calculated mid-band gain however, and my notes read a gain of about 34dB. Where as my calculations show a dB of 2.4...
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    Calculating Midband Gain for NPN BJT: Are My Results Accurate?

    RE is bypassed, as all capacitors are shorted (internal are open). Source impedance is verified as 100k ohms
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    Calculating Midband Gain for NPN BJT: Are My Results Accurate?

    Homework Statement I just have to calculate midband gain for a typical NPN BJT. The transistor model is a 2N3904 Have I calculated something wrong?? My gain is 0.748
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    Did I correctly find the probability density function?

    I just realized that I did not replace the 1's with j's which led to my grand error! The j's are meant to cancel.. my answer should be: ez / 2 .. .. Is that correct?
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    Did I correctly find the probability density function?

    Homework Statement A random variable x has a probability density function given by fX(x) = e-x , x ≥ 0 and an independent random variable Y has a probability density function of fY(y) = ey , y ≤ 0 using the characterisic functions, find the probability density function of Z = X + Y...
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    What are the two sides that contribute to the divergence theorem?

    Homework Statement Suppose the one-dimensional field A = Kx * ax exists in a region. Illustrate the validity of the Gaussian theorem by evaluating its volume and surface integrals inside and on the rectangular parallelepiped bounded by the surfaces: x=1,x=4,y=2,y=-2,z=0 and z=3, for a given...
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