PURPOSE: To provide the passive convergence circuit corresponding to the multiple frequency change of a horizontally deflected frequency.
CONSTITUTION: Constant circuits 9 and 10 are provided corresponding to the respective horizontally deflected frequencies and switch circuits 8 and 11 are provided to switch these constant circuits corresponding to the horizontally deflected frequencies. In the case of executing switching, the switch circuits execute switching while overlapping ON states. Therefore, by switching circuit constants corresponding to the respective horizontally deflected frequencies, the passive convergence circuit can be realized corresponding to multiple frequencies and by switching the circuit constants while overallping the ON states, the voltage withstand of the switch circuits 8 and 11 can be lowered.
FUNADA ETSUO