| 摘要 |
PURPOSE:To simplify a transformer to improve the use efficiency and to make high-precision detection possible, by applying positive-side and negative-side half-wave rectification to the secondary-side voltage of a transformer in accordance with the relation of phase between this voltage and an AC voltage applied to the winding of a rotor. CONSTITUTION:When a positive potential is applied to a winding 2 of the rotor of a synchro- oscillator 1 and the shaft of the rotor is displaced in the positive direction, a positive-potential DC voltage is outputted as the output voltage. When the positive potential is applied to the winding 2 and the shaft is displaced in the negative direction, a negative DC voltage which has a polarity opposite to that of the potential at a point A and has a potential equal to this potential is outputted. When a negative potential is applied to the winding 2 and the shaft is displaced in the positive direction and a positive potential is outputted to the point A to make phases opposite to each other, a positive-potential DC voltage is outputted. When the negative potential is applied to the winding 2 and the shaft is displaced in the negative direction and a negative potential is outputted to the point A to make phases equal to each other, the potential is amplified in proportion to the induced voltage at the point A. Since an output transformer T4 consists of a pair of windings, the structure is simplified and is made small in size and light in weight. Further, since the output is obtained by half-wave rectifying circuits 9A and 9B, the use efficiency of the transformer T4 is improved. |
