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Help with Amica WiFi board circuit

Discussion in 'Radio and Wireless' started by CircuitMaster, Feb 21, 2018.

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  1. CircuitMaster

    CircuitMaster

    48
    1
    Dec 17, 2016
    Good day! On this circuit can someone bring a little clarity, because searching in google does not help.

    I have an Amica WiFi board that needs 3.3v to run and a voltage level shifter. They are both made in KiCad, but on the circuit for the shifter it has 1npn and 1pnp transistor, but the name of the second transistor is the same as the first. So there is a mistake. Can anyone tell me how this circuit works please, as its confusing to me.

    [Images removed by moderator on request]

    This is for a company.
     
    Last edited by a moderator: Feb 23, 2018
  2. Alec_t

    Alec_t

    2,757
    733
    Jul 7, 2015
    :confused: I can see only two MOSFETs.
    The IRF7351 is an N-channel type, so Q1A is correct. Q1B shows a P-channel type, so it can't be an IRF7351 if indeed it is meant to be a P type.
     
  3. CircuitMaster

    CircuitMaster

    48
    1
    Dec 17, 2016
    I don't know what its ment to be. That's why I ask does anyone know a anything about this circuit? And about the Amica WiFi module (NodeMCU) as I can't find a valid data sheet.
     
  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,300
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    Note the pin numbers. I suggest that when I Google that part number I'll find its a dual mosfet in an 8 pin package.

    Edit: yup. Just Google it.
     
  5. CircuitMaster

    CircuitMaster

    48
    1
    Dec 17, 2016
    Google it didnt work. That's why I posted here. But its OK, I already solved the problem.
     
  6. CircuitMaster

    CircuitMaster

    48
    1
    Dec 17, 2016
    Can someone please close and delete this thread as I don't see how.
     
  7. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,300
    2,737
    Jan 21, 2010
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