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Recent content by ywcheung

  1. Y

    Signal amplification circuit

    what is the equations of this circuit?? can you expain it in detail please? and what you mean Two capacitors give at less a 2nd order system?
  2. Y

    Signal amplification circuit

    It is a bandpass filter How to calucate the the Q value, fc, gain of this circuit....... Anyone can explain or describe this circuit...thank you!! How to improve this circuit to high Q
  3. Y

    Can I use MCU to represent the function of Timer NE555??

    I need to produce 40KHz pulse............ If I use 89S52 to do it, I will success or not? and the performance is good or bad?? thank you
  4. Y

    Active filter- transfer function

    um.....i want to know ....how come of this equation
  5. Y

    Active filter- transfer function

    how to prove and extend the transfer function of the LPF,HPF,BPF and BSF??
  6. Y

    Forums focused only on maths and physics

    Math-Physics forum? I also want to know.
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