Posted by at 9:15 PM

  3 Responses to “blogger”

  1. could you please explain why you picked 1mA for Ic and 1v for Ve for the amp using the 2n3904. the data sheet says Vce= 1V, and Ic= 10mA for hfe to = 100-200.

    • The numbers on the data sheet mean that they measured beta to be around 100-200 for those conditions. More current means that you’ll have a lower output impedance (lower Rc), but I didn’t to go lower and more current also means that you’ll use up your battery faster.

      It depends on what this amplifier stage is driving next.

  2. 100-300 for hfe

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