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    • #12645

        Hi everyone,

        I saw a little video on YouTube lately about the classic astable oscillator as described in the 90 experiments manual, circuit 1.

        The disadvantage of this circuit that the pulses have not the same length which results in the lamp blinking very short with longer pauses.

        Well, we can improve this by adding an emitter follower as shown in the picture below :

        Many greetings

        improved astable

      • #12652

          A legacy (positive ground) based circuit which improves upon the original.  Very nice engineering Frank!

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