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  • magnum - transistors

    Hi !


    I just started building magnum detector but I can't find following transistors:


    BC 184L


    BC 214L


    and a nightmare :-( BFX 29


    What transistors I could use instead or at least maybe someone had some info about bfx 29 or other?

  • #2
    Re: magnum - transistors

    >Hi !


    >I just started building magnum detector but I can't find following transistors:


    >BC 184L


    >BC 214L


    >and a nightmare :-( BFX 29


    >What transistors I could use instead or at least maybe someone had some info about bfx 29 or other?


    The way these transistors are used in the circuit makes their types pretty non-critical. Things should work just fine if you use 2N3904's for the NPNs and 2N3906's for the PNPs. The BFX29 is the only one you might want to consider differently - if you're only driving headphones then the 2N3906 should be OK; if you're driving an 8 ohm speaker then you might want to use a TO-220 type PNP (like a TIP32).


    Lets us know how it turns out!


    - Carl

    Comment


    • #3
      Re: magnum - transistors

      Thanks !


      I was thinking about BC 309 instead bc214 and bc 149 instead bc 184 but I'll try yours sugestion . As for now I've only done 1st PCB so you'll have to wait for a while for my opinion about Magnum ;-)


      Mariusz

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      • #4
        Re: magnum - transistors

        Hi,


        Check the pin-out of any alternative transistors you use. The BC***L series has the middle lead as collector.


        Eric.

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        • #5
          Re: magnum - transistors

          >Hi,


          >Check the pin-out of any alternative transistors you use. The BC***L series has the middle lead as collector.


          but the ones that i had had middle pin as base, what about 2n series where's base, colector and emiter ?

          Comment


          • #6
            Re: magnum - transistors

            >>Hi,


            >>Check the pin-out of any alternative transistors you use. The BC***L series has the middle lead as collector.


            >but the ones that i had had middle pin as base, what about 2n series where's base, colector and emiter ?


            Eric's right, I didn't think of that. 2N390x has E-B-C pins with the flat side facing you.


            - Carl

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