Section outline

    • Kia ora...

      This week we will continue learning about the 555 timer integrated circuits. We will use the variable resistor (potectiometer) to control the time and we will start building our own timer

      Big Idea:

      Modelling a timer circuit using 555 timer

      Learning Intentions: 

      use a 555 timer integrated circuit (IC) to operate an output for a specific amount of time

      use mathematics to calculate a time constant

      insert a transistor to operate an output


      Success Criteria: I can/have...

      • construct a working prototype circuit using a 555 IC
      • I can vary the timing period by changing input components
      • I can understand a time constant calculation

      Activities:

      Build this circuit using Tinkercad Circuits: