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Recent content by adi_rage

  1. A

    Doubt related to gsm modem antenna

    Antenna of the modem is connected via a brown colour wire which is ended in a connector of MMCX then for this connector,antenna is connected and is enclosed in samll black colour conical shaped plastic casing so what type of antenna is this?
  2. A

    Doubt related to gsm modem antenna

    Actually my doubt is,here in gsm modem what type of antenna are we using las we have some types like dipole antenna,helical antenna etc..
  3. A

    Doubt related to gsm modem antenna

    I am using GSM MODEM provided by sim300 and i have no clue regarding the antenna specifications of the antenna used in this modem. In the pdf file it is just mentioned that the module has 50db antenna connector.I do not know anything about this antenna connector and in what way it is related to...
  4. A

    Doubt in GSM MODEM MODULE

    WHAT IS THE USE OF LM2576S IN GSM MODEM MODULES? and Diff between serial and debug ports in this modems?
  5. A

    query on the memory-flash

    Then my doubt is - IN SYSTEM PROGRAMMING and SELF PROGRAMMABLE FEATURE are different or are they both one and the same?
  6. A

    query on the memory-flash

    When i came across the special features of few ATMEL micrcontrollers,i did not understood the term "self programmable flash".what do you mean by this exactly?
  7. A

    basic query about real time operating system

    what is the exact difference between "rtos" and normal operating system like windows,linux etc?
  8. A

    design of a gsm module

    Actually i am doing a project involving both GPS and GSM technologies for which i need a gsm module and the main problem here is i want to design a gsm module myself instead of buying a readily available one.As i am clueless regarding how to design,can anyone help me in this issue?
  9. A

    help me i need reply asap....

    thankzz for responding very fast and have one more doubt regarding ULN driver which has its voltage specifications of output voltage 50v but a normal stepper motor can tolerate upto 12v but v use ULN driving stepper motor..how is this possible?
  10. A

    help me i need reply asap....

    what do you mean by the statement at89s52 has programmable serial channel.....i.e what do you mean by "programmable serial channel"..........?:-?:-?
  11. A

    L293 compared to ULN...

    when i was designing normal basic robots till now i used l293 motor drivers but recently i came across one mini project where a stepper motor is drived by a uln driver...now my doubt is what is actually this uln driver n what is the main difference betwween l293 motor driver n uln driver...plz...
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