Mixed transistors

Discussion in 'The Projects Forum' started by spanish fly, Aug 9, 2011.

  1. spanish fly

    Thread Starter New Member

    Apr 27, 2010
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    0
    Could somone please help me and tell me if this part circuit is feasable.
    It comes from a controller for a golf trolley, it doesn't work,
    I hope i've included enough info for someone with knowledge to work it out.
    The transistors have been removed from board and test out as listed, I did find out that the S 8050 can be a PNP or NPN.:mad:
     
  2. praondevou

    AAC Fanatic!

    Jul 9, 2011
    2,936
    488
    There is too much information missing.

    I assume you drew the circuit from the board, right?

    The FET looks like if it's inverted, so does the voltage regulator.

    What's the switch after the relay?

    The two npn/pnp before the FET look like a driver driven by Q1.

    Common of the voltage regulator should be tied to GND.

    Post some pictures, golf trolley model etc. as much information as possible.
     
    Last edited: Aug 11, 2011
  3. spanish fly

    Thread Starter New Member

    Apr 27, 2010
    11
    0
    Thank you Praondevou for your reply to my problem.
    I will try and work out a full diagram of the circuit, made one but too large to download.
    Some info at the moment.

    Has REPOW on outer case.
    No make of trolley.
    I think Its of Chinese design.
    There are 8 pins at end of board 1=live from relay 2=return from the switch in the handle, 3,4,5, battery condition lights, 6,7,8, connected to pot.
    Mosfet=P60NF06
    Schottky=MBR2010oct
    18 pin IC=SN74HC139N
    8 pin IC=CY8C22113
     
  4. spanish fly

    Thread Starter New Member

    Apr 27, 2010
    11
    0
    Ive attached diagram of circuit I'm sure it's correct,

    I'm very new to electronics but it dosn't seem correct to have PNP and NPN transistors mixed this way.

    Regards
     
  5. praondevou

    AAC Fanatic!

    Jul 9, 2011
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    488
    Can you post it as .jpeg or .png? Resolution is not sufficient.
     
    spanish fly likes this.
  6. spanish fly

    Thread Starter New Member

    Apr 27, 2010
    11
    0
    Sorry sent as word doc.

    This one is JPEG,

    PNP=8550,
    NPN=8050,

    Thanks for your patience
     
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