Homemade transformer for fluorescent tube tandem cathode heating.

Short story: In USSR starters for FS-2 or 2 foot 120 volt fluorescent tubes were very poor quality and they malfunctioned everywhere frequently all across the whole USSR. So Soviet engineers invented a special ballast with integrated special heating transformer that could get all four ends of two 2ft tubes on one 4ft 40 watt ballast with one FS-4 starter that worked on 240 volts. The special heating transformer was included inside the complete ballast casing. But these ballasts were scarce and I only had one before I lost it somehow. So today I decided to try and make my own heating transformer. I took a step down transformer from incandescent Christmas lights that uses 240 volts to step down to 24 volts 2 amps, and I took it apart, took out 240 volt winding and revound it with the 0,5mm copper wire to take 32 volts. I then connected it in the way that when the strater closes it shorts together two ends of two tubes and the transformer transforms the power and heats the other two filaments of the tubes. When the starter opens it all four ends are preheated at the same time and two tubes startup in series simultaneously. Pretty interesting stuff. It was pretty easy to make such transformer. The ballasted 0,41a 240 volt mains power comes from the ballast, through the filaments into the 32 volt winding, the lack of current drops the 240 volt voltage to 32 volts and then the 24 volt winding sends power to the other two filaments and heats them with 12 volts each. The idea was ingenious and I don't know why such design was not implemented in USA fixture design too as it eliminated two starters and left with one better working FS-4 starter, because ,as everyone knows All FS-2 starters are trash.