Recent content by cherry_ying

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    Show an electron is executing simple harmonic motion

    It seems that there is no translation error, it's just that our prof decided to take a question from a previous textbook, but make it more complicated by changing some parts (in the original question, it was restoring force per unit distance, but he changed it to restoring force at a given...
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    Show an electron is executing simple harmonic motion

    A classmate of mine clarified it for me, it turns out that I just had had to prove K(r0)' = ma, which gives the SHO equation. Thank you for all your help! :smile:
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    Show an electron is executing simple harmonic motion

    It seems my prof just changed the question. instead of restoring force at a unit distance, it is now a restoring force at a given radius. Does this make it more clear? 2. but I don't know the proportionality constant though, so by subbing in a specific w^2 it would work, but it doesn't mean...
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    Show an electron is executing simple harmonic motion

    Thanks for your reply. But isn't the restoring force per unit distance is already given. What's the purpose of finding a resultant force? Also, how can a be proportional to dx if neither cos or sine is involved? Could you clarify your last statement? Thanks!
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    Show an electron is executing simple harmonic motion

    Homework Statement When the electron in a hydrogen atom bound to the nucleus moves a small distance from its equilibrium position, a restoring force at a given radius is given by: k = e^2/4*pi*epsilon*r^2 where r = 0.05 nm may be taken as the radius of the atom (the equilibrium radius of...
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    Designing a monoflop (monostable multi-vibrator) for high frequency

    No, I am not required to reduce period of the pulse. Please see attached as to an idea of what I'm looking for, except it's shown for low frequency. In the graph, you can see that while one output is on, the other is off, and vice versa. Also, it almost have the same period as the input. the...
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    Designing a monoflop (monostable multi-vibrator) for high frequency

    I read through the data sheet. It seems like it suits what I'm looking for, however, I can't seem to find the schematic for it. I am required to actually produce a schematic of the monoflop. Is there any way to get the schematic of the MC10198?
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    Designing a monoflop (monostable multi-vibrator) for high frequency

    Okay, from my simulation, the circuit also works for low frequency, but the problem I'm having is to adapt it to high frequency, and I have no idea what to do. Since monoflops are not generally used for high frequencies, what should I use in order to get the same result as monoflops for high...
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    Designing a monoflop (monostable multi-vibrator) for high frequency

    My supervisor gave me a reference to a master's thesis where the monoflop is supposedly to work. However, there are no values to the component, and no matter what combinations of value I try, I am not getting what I require, instead, from my graphs, it seems like the transistors are not even...
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    Designing a monoflop (monostable multi-vibrator) for high frequency

    I have learned nothing regarding this (what should I do differently in order to get into the 200MHz range) since this was a project assigned to me for this research position I'm doing. I was only told me refer to the design from a master's thesis, and with my current knowledge of circuits, which...
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    Designing a monoflop (monostable multi-vibrator) for high frequency

    Hi, I am required to design a monostable multi-vibrator suited for high frequency 200MHz. I am currently referring to this site http://www.play-hookey.com/digital/experiments/rtl_monostable.html for my design, however, it seems that this is only made for low frequencies. What should I do in...
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    Design a Monoflop: Help Calculating Values from Sine Wave Input

    Sorry, when I read it the first time, I didn't see any diodes mentioned and since I couldn't find the mentioned V2 on the diagram, I thought that the V1 for the other part of the circuit is V2. Let's see if I understand this correctly, so the varactors are controlled by the voltage source V1...
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    Design a Monoflop: Help Calculating Values from Sine Wave Input

    Attached is a screen shot of a page of the paper describing how the monoflop works. it seems that it only described how the circuit works, however, no diode was mentioned. I am currently working on it on ADS, which allows simulation. I have tried arbitary values with all resistance set to 50...
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    Design a Monoflop: Help Calculating Values from Sine Wave Input

    Thank you so much for your quick reply! The circuit in the figure was from a paper. My tutor/phd referred me to it. The pic is a direct screen shot from the paper, so the chances of a missing connection is slim. however, if it's wrong, what would you suggest to change? cutoff and...
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    Design a Monoflop: Help Calculating Values from Sine Wave Input

    Hi, I am a first year undergrad, and for my research, I was asked to design a monoflop (monostable multi-vibrator) which takes in a sine wave, and outputs two square waves which are corresponding to each other (one is on while the other is off, and vice versa) I was told to refer to the...
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