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Recent content by Meihdi

  1. M

    Difference between ARM device and microcontroller.

    differnce between any microcontroller & arm Hello, I have a silly question (for most of experts): What is the difference between an ARM(7 or more) and an Microcontroller? Thanks for your replies. Mehdi
  2. M

    about the harmonic coupling of the varactor in vco

    Hi psmon, You should pay attention to the fact that adding big capacitor on Vtune will have an impact on the loop filter and stability... Regards. Mehdi
  3. M

    square wave generator

    Hi, As explained by lordsathish, you can use IC555. There are plenty of application on the web. Just browse google. Do you have any constraints in terms of current capability? Meihdi.
  4. M

    How to to filter a specific frequency using L & C ?

    Re: communication Hello All, depending on the selectivity you want, but you can simply use in parallel to your circuit output a serial L and C (f=1/(2Π√(LC)).That should ground your specific frequency. What is your working frequency band? Meihdi
  5. M

    How to check stability of a circuit in HSPICE?

    Re: Stability Hello, I do not know Hspice but for sure to study the stabilty of your system, you need to break the loop and simulate the open loop transfer response of your system. Plot the bode diagrams (gain and phase) to get the phase margin and gain margin to see whether your system is...
  6. M

    Why we need two D flip-flops in a flip flip based divider by 2?

    Re: Divider by 2 Hi the_edge, I am Newbie in electronics. I think my previous post was not really clear. Please let me clarify. In fact, I would like to divide the frequency of an input signal using a flip-flop based divider by 2. I would have expected that one D flip-flop is not enough. So I...
  7. M

    Why we need two D flip-flops in a flip flip based divider by 2?

    Hello All, I have questions about the flip flop based divider by 2. There are two D flip-flop. Is one D flip-flop not enough? What is the purpose of the second flip-flop? Thanks for your help.
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