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Thread: A litle transistor help?

  1. #1
    Someone Electro Newbie
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    Default A litle transistor help?

    Weel im saveging parts from circuits(like most of you do).

    And got a circuit vith a vhole bunch of transistors(strange)

    Like on a transistor seas:
    MPS
    A92
    E B C

    Like can someone explane this code?

    And i think i got a transistor width curent limeting!
    I like i got the diode to flash for a milisecodnd wen i aply curent to base.
    But wen i use a ristor over base it stays on!!!(not shure whare is B E C)


  2. #2
    crust Okay
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    Default

    That is an MPSA92 PNP high voltage transistor. With the flat side facing you, the pins are emitter, base, collector.

  3. #3
    Someone Electro Newbie
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    Default

    Yes thats right i tryd to shearch for MPS_A92 vith Yahoo.

    Woow is this transistor faimos!(i wish i cod be that faimos :lol: )



    PS:
    To bad it only suports 100 mA but 300 V is a wow

  4. #4
    mozikluv Newbie
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    Default MPSA092

    hi,

    you are trying to have this transistor to function like a switch right? you need another PNP transistor to drive that transistor and use a timer ic to make the led flash on & off.
    \"NONE BUT THE BRAVE DESERVES THE FAIR\" ~Shakespeare~

  5. #5
    Someone Electro Newbie
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    Its normaly wired

    But wean i run curend in the base(directly)the LED maces a flash(1 ms long)but wean i put a resistor ower the base the LED stays on!

    I think if run to much curent i the base and the transistor has a ower load shut down


    PS:
    Im not tying to mace a LED flasher!:?

    If I wanted so then i wod write:
    I want to build a LED flasher and i dont know how.

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