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TOPIC 3: ASTABLE MODE








               EXAMPLES









                    1. The output of the 555 Timer for a Astable multivibrator mode

                       __________.


                       A.  constantly switching between two states.
                       B.  is low until a trigger is received
                       C.  is high until a trigger is received
                       D.  floats until triggered





                 2.  _______________ is defined as the active output time devided by the
                      total period of the output signal.


                       A.     Time High
                       B.     Time Low

                       C.     Duty Cycle
                       D.     Frequency




                 3. The period for LOW and HIGH of Astable Multivibrator can be
                     calculated based on _________ values to outside of timer.



                      A.    Capacitor and inductor
                      B.    Resistor and inductor
                      C.    Transistor and inductor
                      D.    Capacitor and resistor







                 ANSWER:


                    1.  A
                    2.  C
                    3.  D





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