| 摘要 |
PURPOSE:To use only one miniature and inexpensive resonance capacitor, by connecting said capacitor in parallel to a coil of the primary side. CONSTITUTION:A primary side coil N1 is coupled to a secondary side coil Nout in a transformer, and a magnetic flux control coil Nc is set so that its magnetic flux is orthogonal to both coils. In such way, a transformer 6 is formed. Then a resonance capacitor 24 is connected in parallel to the coil N1, and a parallel resonance circuit is added, in order to increase the maximum load power and the control sensitivity, and to redue the size and weight of the transformer 6. The parallel resonance frequency of the parallel resonance circuit is set equal to the energizing frequency of the transformer 6. |
