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Recent content by mghicho

  1. M

    circulator outer Impedance

    Hi I have a question about circulator, what it the Impedance R in an Ideal and practical circulator?? and IF the impedance was infinite or i could find another three port device with infinite outer resistance, Can i add S1 and S2 by just connecting them ??
  2. M

    How to know in which phones a specific chip is used?

    hi QHx220 is an analog noise canceller from Intersil. it have applications in mobile phones. how can I know in which phones it is used ?
  3. M

    selection of Gsm & gps module

    hi i have a project to track objects and send their position data through. I also read this topic : https://www.edaboard.com/threads/111544/ there were a useful module there SIM548 GSM/GPRS+GPS Module that have both GSM and GPS integrated, but i wanted to ask again that is there any...

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