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    • #9137
      LectronFan
      Moderator

      Hi all,

      The Schmitt trigger is a very versatile circuit !

      We change a few blocks and by setting the potentiometer we can adjust the charging and discharging of the capacitor.
      Did you also notice that we use a 120 Ω resistor in series with the light bulb ?
      This will reduce the lamp current and save our battery 🙂

      In a few days, I will explain how this and previous version (part 2) works.

      Did you also know that we can build these circuits also with the modern Silicon NPN transistors ?
      Try it out !
      The Ge transistors have other characteristics so we may need to adapt the circuit by changing resistor values.

      Many greetings

      Schmitt trigger V3

      • This topic was modified 6 months, 4 weeks ago by LectronFan.
    • #9139
      Michael
      Keymaster

      Yet another great addition to your fantastic circuit contributions Frank!

      Fellow Lectroneers, don’t forget that the legacy Lectron circuits use a positive ground.  The new Lectron circuits post 2001 use a negative ground.

      Best regards to all,
      Michael

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