PURPOSE: To realize a high voltage stabilizing circuit sufficiently capable of response to a high voltage change in a fast changing speed by incorporating a high voltage breeder resistor into a flyback transformer at a position where the effect of leakage inductance of the said flyback transformer is less.

CONSTITUTION: In the figure, 1 is the high voltage breeder resistor, 14 is a high voltage rectifier diode, 15 is a high voltage cable, 16 is an anode cap, 18 is a ferrite core, 19 is a gap, 20 is a high voltage winding and 21 is a drive winding, 22 is a high voltage breeder resistor storage section, and 23 is a cable connected to a point (e), i.e., variable resistor. A shield wire is used for the cable so as not to generate an induced voltage even if the cable approaches to a coil of the flyback transformer. Since the fitting position of the high voltage breeder resistor is at the uppermost part of the flyback transformer and positioned laterally, the effect of leakage inductance is least and the level gives no problem in the circuit operation. Further, one high voltage cable is enough, since it is connected from a point (a) of the flyback transformer 12 to a point (d) of a cathode ray tube.