Recent content by nothing909

  1. nothing909

    Binary Addition: How to Add Binary Numbers with Examples

    Homework Statement Shown is two binary numbers adding with the answer The Attempt at a Solution Looking at the end side 1.1+1.1, shouldn't that be 11.00... instead of 10.00...
  2. nothing909

    The z transform and first principles

    They do show me how to get the first part, but not how to converge. I think the last line you multiple by denominator and numerator by z squared, but that’s all I got. All I need is a quick explanation of how they are getting the last 2 lines of the equation, I understand the rest of it
  3. nothing909

    The z transform and first principles

    Homework Statement shown in the picture is the question and answer to it, but i don't understand how they're getting it. this is me just not understanding the maths and i know its not difficult but I've been stuck on it for a while, so can someone explain in detail how you get the last two...
  4. nothing909

    Probability Question -- Choosing red and white coins from two tables

    Homework Statement table 1 has 3 red and 5 white coins. table 2 has 4 red and 2 white coins. a coin is chosen at random without knowing its color from table 1 and placed onto table 2. then as coin is taken from the second table. what is the probability that the coin chosen from the second table...
  5. nothing909

    Expression for closed loop gain of differential amplifier

    yea, i see that. i understand all the steps now, thanks for your help
  6. nothing909

    Expression for closed loop gain of differential amplifier

    ok, thanks. can you explain how it goes from V1/(1 + R3/R4) then to = (V1 x R4/R3)/(1 + R4/R3)
  7. nothing909

    Expression for closed loop gain of differential amplifier

    Yes, R1/R2 = R3/R4, it says that in the solutions. and yes, that is a mistake. i'm confused about where the 1 comes from, why does it just appear?
  8. nothing909

    Expression for closed loop gain of differential amplifier

    Homework Statement The question is Derive an expression for the closed loop gain of the differential amplifier. I have solutions for these questions but the solution for this question is quite vague. Here is the solution: I understand part 1 and part 3, but part 2 I don't. So looking at...
  9. nothing909

    Instrumentation amplifier practical results vs simulation

    yea, that's the circuit. even if that is a big error, the simulated gain would still be 6 and the practical gain would be slightly lower, why is this?
  10. nothing909

    Instrumentation amplifier practical results vs simulation

    I've not got the schematic and simulation to show right now, it's just a basic 3 op amp instrumentation amplifier. do you need them to answer my question and if so, why? i know the simulation results are ideal, but what factors in a practical test could cause the gain to drop a little?
  11. nothing909

    Instrumentation amplifier practical results vs simulation

    I just have a simple question to ask. I'm simulating an instrumentation amplifier and then testing it practically. When I simulate it, my gain is 6, but when I test it, I get a gain of 5.54. I'm just wondering what is causing the slight drop in gain in the practical results?
  12. nothing909

    Reset Pong Game on Microcontroller with C Programming

    Homework Statement I'm using a microcontroller to create a pong game, but I'm completely new to C programmning. I'm mostly reusing code and adding bits in here and there rather than writing it from scratch. I have a basic pong game working right now, but every time someone scores, I have to...
  13. nothing909

    Testing instrumenation amplifier

    I don't understand what u mean when you say "compute the step change of input..." say my results are this: how do i get the gain for these 2 result tables? they're very similar, but the negative and positives are opposite for each set of results. can you explain a bit more simply how to get...
  14. nothing909

    Testing instrumenation amplifier

    Homework Statement I just have some very simple questions to ask. I'm testing a basic 3 OP instrumentation amplifier I have to short V2 to ground and test V1 from -2V to 2V, in 0.25 increments. I then have to short V1 to ground and test V2 from -2 to 2V in 0.25 increments. the results i...
  15. nothing909

    INA Frequency Response: Gain, Circuit & Open Loop Explained

    when i do the calculation: Av = 1 + 2R/Rg which i have to "calculate overall circuit gain" is this "overall circuit gain" the closed loop gain?
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