Recent content by Trespaser5

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    Inverse curves related to JFET characteristics, help

    Hi, Thanks so much for the reply and...I think I may understand but I just want to check. I drew a tangent on the curve at that point, the took the difference in y (Ids) and divided it by x (Vds) and divided it into 1. It gave me a close answer, it also gave me a close answer to some other...
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    Measuring Voltage with an Oscilloscope: Channel A RMS Voltage

    It sounds like it, assuming it's a sine wave take your amplitude and divide it by the square root of 2.
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    Inverse curves related to JFET characteristics, help

    Inverse curves related to JFET characteristics, help! Hi, This is an example given in a lesson which is closely related to a coursework question I'm trying to complete, the problem is I can't understand how they have got the results they have. Here is the statement giving the relationship...
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    NPN and PNP transistors and load

    Hi Sylvia, That is my question really, I have set up these simple on the circuit simulator and observed that arrangement of the load and DC voltage source doesn't matter to the current in the circuit. However when I tried to replicate the PNP circuit shown using a bench power supply unit (the...
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    NPN and PNP transistors and load

    I've attached some examples of the circuits on the circuit simulator, when I wired the circuit in reality I used a inductive proximity so the base was obviously driven in a different way. Thanks for your answers Kyle
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    NPN and PNP transistors and load

    Hello, I've been playing with transistors on a circuit simulator and found that it doesn't matter on an NPN transistor whether I put the load on the collector or emitter side, the load still has the same current flowing through it. The same is true for the PNP transistor, however when I...
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    Engineering Synchronous Machines - Open Circuit and Short Circuit Tests

    Residual flux ? I'm not sure about that, fields collapse pretty fast. Usually residual charge is left in the capacitors and it takes time for them to discharge. That's from a practical point of view though when I'm working on circuits, I'm not sure what your equation says.
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    Near end coupling coeffecient problems

    I have been given a formula Kne = \frac{1}{4Td}(CZo+\frac{L}{Zo}) I've been given C as 10pF and L as 80nH and Zo as 70.7. I have calculated Td from the formula propogation velocity = 1/\sqrt{LC} and the line capacitance and inductance are 400nH and 80pF and then divided this into 0.05m the line...
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    Transposition as part of a laplace transform

    I am doing a laplace transform as part of a coursework assignment. I have some example transpositions that are relevant to the question I am answering but I can't see how the author has got from one arrangement to the next. [b]2. Homework Equations He has given 1/(s^2(τs+1)) =...
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    Constitutive Equation for required flow to maintain temperature

    I have an endothermic gas generator which maintains a heat of 850 °C while not generating endothermic gas. The generator maintains it's temperature through a burner control system, however coolant still runs through a water jacket around the outlet pipe (which in this state has no gas running...
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    A diode with a resistor in parallel and in series.

    Thank you so much. I think I was mis understanding that the voltage drop stated was the same as the voltage shown across, when that twigged today I got it, what a feeling :) Thank you for your help and time :)
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    A diode with a resistor in parallel and in series.

    I have a diode with a resistor in parallel(R2), but also diode resistor circuit has a resistor in series with it(R1). I have uploaded a drawing as well but I think it takes a bit of time for them to be authorised. The values of the circuit are Vs = 20v R1 = 3kΩ R2 = 470Ω Diode = Has a Volt drop...
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    How to graph a sin function with respect to it's limits and x intercepts

    I've been trying all week but what I can't understand is that as [sin][/-1](0) is always 0 then any value I put in between 0 and 2∏ I get that value as an x intercept, where am I getting confused ?
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    How to graph a sin function with respect to it's limits and x intercepts

    sorry, i didn't have my calculator in radian mode. Still I don't understand how I get the values of the x intercepts mathamatically in the same way as you do with polynomial expressions ?
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