transistor

Discussion in 'General Electronics Chat' started by khalid km, Mar 7, 2011.

  1. khalid km

    Thread Starter New Member

    Mar 7, 2011
    2
    0
    instead of bc547 for amplfier which transistor i can use out of BD137,BC557,2N3904,1C128
     
  2. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    300
    Four widely varied transistor types presented as possible alternatives? The last type (1C128) does not seem to be listed as a BJT, perhaps it should be AC128?

    This looks like a homework multiple choice question, so perhaps it would be better if you tried to find the datasheets on the web for yourself.
     
  3. alim

    Senior Member

    Dec 27, 2005
    113
    1
    Hi bc547 is an NPN BD137 is a bigger transistor (no),bc557 is a PNP (no), 2n3904 is an equivalent(yes) I do not know 1C128.
     
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