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    What is Potentiometer?

                     A potentiometer is like a volume knob that
                     controls the flow of electricity in a circuit.

                     It has three terminals: one for input, one
                     for  output,  and  one  for  adjustment.  By

                     turning  the  knob,  we  change  the  resistance  between  the  input  and  output
                     terminals.

                                                                                                    21 st
                                     Building a Fan Regulator Circuit                            Century   #Creativity
                                                                                                       #Technology Literacy
                      Activity                                                                     Skills
                                     with the Smart Circuit Kit

                     Step 1       Take out all the components from the smart circuit kit:

                                  1. Fan                 2. Motor                        3. Potentiometer

                                  4. Battery             5. Diode                        6. Magnetic Board

                                  7. USB Cable           8. Battery OTG Socket

                                            Fan                 Motor            Potentiometer              Diode

                                          Battery            USB Cable        Battery OTG Socket Magnetic Board

                     Step 2       Connect the fan on the motor.

                     Step 3       Attach the potentiometer to the negative terminal of the diode.

                     Step 4       Attach  motor  to  the  free  end  of  the  potentiometer  and  attach  a
                                  battery.

                     Step 5       The negative terminal of the battery is connected to the motor and
                                  the positive terminal to the positive terminal of the diode.

                                                                            Understanding Circuits and Electronics  39

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