Recent content by Samtheguy

Hi and thanks for your reply. My professor has since confirmed that this method is correct. Vi is the fundamental voltage of the waveform generated by the transistor bridge. The Vi waveform is a square wave where the pulse width changes in relation to the reference sine wave but frequency...

Homework Statement Hi there. I was just wondering if anyone can conform that my method for this problem is correct so far? The transistor-bridge converter shown below is being used to connect a PV array to the grid. For the purpose of this coursework, you may assume that: • The PV array...

Any help on this question would be great as I got this same question on an exam and I am wondering if I got the beginning right or not.

Homework Statement The two identical steel balls A and B moving with initial velocities VA = 6 m/s and VB = 8 m/s collide, as shown in figure Q4. If the coefficient of restitution is e = 0.7, determine the magnitude and direction of the velocity of each ball just after impact. (See...

Okay. So Gain-bandwidth product = Open-loop gain X cut-off frequency. Is this the answer to the small signal bandwidth or is there a lot more computation to do? (I'm guessing there is more to do)

The magnitude of (1+j) is sqrt(2) or 1.414. So therefore f would be 7Hz at the -3dB point.

Thanks for your reply. To caluate the DC gain (without feedback) would I use: A_d = 2x10^5 / (1+jf/7) and set f=0 since it is DC. Therefore, I get A_d = 2x10^5. In dB, this is a gain of 106.02 dB. To find the -3dB point, do 106.02 - 3 = 103.02dB and convert back to magnitude using...

Okay, that seems more sensible. I have attemped Question 1. Am I correct in saying that you would draw the Inverting Op-amp circuit diagram, remove the op-amp component since the inputs have a very large input impedance (and thus no current flows into them), and label the virtual Earth point...

Homework Statement See attached file for relevant questions. I'm finding the Op-amp questions in section A very difficult. Any help with these questions would be much apprietiated. Homework Equations The Attempt at a Solution

To my knowledge, rm and xm do not change when converting to the approximate equivalent circuit. To go about finding the primary current (Io) you will have to calculate the currents Ioa (active component) and Ior (reactive component). The formulae for finding these are: Ioa = V1 / rm Ior = V1...