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Recent content by andreas1982

  1. A

    how to make dead battery reusable

    It is dangerous to play with electrochemical cells! Open your eyes.Bye
  2. A

    Question about rect () function

    It is one for: ½-(T/2) e ½+(T/2)
  3. A

    real simple question: what is light

    You can see this link: http://csep10.phys.utk.edu/astr162/lect/light/waves.html
  4. A

    What does the close form expression mean?

    Re: close form expression the meaning of closed form expression is that the equation is solved by simple or know functions as ( sin, cos, exp and ect ect). Many differential equations are not solved by simple or know functions, so you must use numerical methods to solve it! Regards.
  5. A

    Need some help and suggestions...

    The best is Image processing. I think that it is the future of various topics ( for example medical image, ... ) I suggest this book: Digital Image processing of Gonzales. Read it. It is very good! Regards
  6. A

    remove noise from ecg signal with matlab filtering

    ecg matlab Is there any paper or book about noise in ECG?
  7. A

    Question about the capability of car battery

    Re: car Battery question. You must always remenber that : 1 Ah is 1ampere×hour so your battery can delivery 70 ampers for hour! Regards.
  8. A

    How to calculate SNR using STF or NTF?

    Re: how to calculate SNR? I forget to say that: SNR=20 log (signal/noise) or SNR=10 log (power of signal/power of noise) Ok? Regards.
  9. A

    How to calculate SNR using STF or NTF?

    Re: how to calculate SNR? SNR is signal noise ratio! So you must calculate signal/noise! Regards.
  10. A

    Can you build digital filter with characteristics of table?

    Re: Filter problem Read the book of Opphenaim...Discrete Time Signal. Is is very good for filter. Bye
  11. A

    Need an electrical version book

    I am searching from 2 years...but there are no hope! Do you find it? Thank you very much. Regads
  12. A

    Whats the difference between a cell and a battery?

    Re: cell Vs Battery Galvanic cell: A device that is capable of spontaneously tansforming chemical energy into electic energy. Examples are flashlight batteries and fuel cells. Batteries: A galvanic cell; or a group of galvanic cells connected in seies, in paallel, or in a seies-parallel...
  13. A

    i want info on Implantable battery

    I am studying about power sources for pacemaker. My thesis deals cell lithium/iodine lithium/monofluoride lithium/CFn SVO lithium/Mg nuclear Can you give me a help? Andreas
  14. A

    i want info on Implantable battery

    I am writing a thesis about Batteries for pacemaker. If you have information, contact me. Andreas
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