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Connect two comparators' output together..

Discussion in 'Electronic Basics' started by [email protected], Jan 24, 2006.

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  1. Guest

    Hi All,

    I saw a circuit that connect two comparators' output together to point
    C, and then C is the input of a transistor, the transistor's output is
    final output.

    Why we can put comparators' output together?

    The output maybe different voltage, but it just putt them together...

    Best regards,
    Boki.
     
  2. Many comparators have open collector output transistors, not logic
    type output stages. When you connect two of these collectors
    together, either can carry current from an external current source to
    the common negative supply rail. If neither transistor is on, then
    the external source of current pulls both collectors positive.
     
  3. Guest

    Clear and useful answer! Thanks!

    Best regards,
    Boki.
     
  4. Allen Bong

    Allen Bong Guest

  5. Rich Grise

    Rich Grise Guest

    Hey, Boki! Your English has been improving, dramatically! Keep it up! :) :) :)

    Cheers!
    Rich
     
  6. Guest

    Thank you! I will : ) : ) : )

    Best regards,
    Boki.
     
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