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14.2. Cathode ray oscilloscope                            279




                                    V v


                                      0                            t
                                           T/4  T/2   3T/4  T



                                    (a) Voltage signal applied to vertical deflec-
                                    tion plate

                                    V h


                                      0                            t
                                          T/4  T/2 3T/4 T




                                    (b) Voltage signal applied to horizontal de-
                                    flection plate
                                                V v









                                                T/2                  V
                                       0   T/4    3T/4   T            h







                                        (c) Waveform displayed on CRO

                     Figure 14.3: Voltages applied to deflection plates and displayed wave-
                     form



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