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BC337 alternative

Discussion in 'General Electronics Discussion' started by adel2014, Dec 10, 2013.

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  1. adel2014

    adel2014

    22
    1
    Dec 1, 2013
    hello; I have in a schematic ten BC337 that drive a common anode 7 segments LED ; could i exchange them with an IC ?

    thanks
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    Show us the circuit. Depending on how they are connected the answer may well be yes.
     
  3. adel2014

    adel2014

    22
    1
    Dec 1, 2013
    here

    here it is ; u1=pic16f876a ; u2=4028
     

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  4. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    I assume those are common anode displays?

    Also I note that you don't show the collectors of the BC337s connected to anything and the load is in the emitter of the BC337 (usually it would be in the collector).

    You would normally use a PNP transistor for this and invert the logic of your column logic, but I can see why you've done this.

    Most driver chips I've seen have the emitters connected together, so they won't work in this environment.

    I think you could replace the BC337s with something like
     
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