| 摘要 |
PURPOSE:To obtain a high-tension coil with the least variation in desired frequency for a self-oscillating invertor by processing the coil itself. CONSTITUTION:When an iron core transformer equipped with a coil 7 is processed with varnish, the inside layer of the coil is less subjected to the outflow of the varnish that the outside layer thereof and thus and air layer caused by the outflow is hardly generated. Accordingly, by grounding the end of the widing L as the low potential side, variation in floating capacity as a whole can be made small, whereas the oscillating frequency is stabilized. Further insulating paper 5 is inserted in between two layers 4 up to several layers from the beginning of the winding and the paper 5 is inserted in every several layers toward the end of the winding. This results in the reduced variation in floating capacity and facilitates and simplifies the alteration of the oscillating freqency. |
