| 摘要 |
PURPOSE:To obtain a sinusoidal wave circuit which has a small size, a low price and a light weight by using a core formed by laminating silicon steel plates provided with an air gap in a magnetic path. CONSTITUTION:A sinusoidal wave generator has a transformer formed of the primary winding 1, a base winding 2, an output winding 3, and a core 8a, and blocking oscillator for interrupting the current of the primary winding 1 by supplying the base current to a transistor 4. In this case, the core 8a is composed by laminating silicon steel plates provided with an air gap 11 in a magnetic path. Thus, the inductance can be reduced without varying any of the magnetic flux density, the magnetic path length, the core sectional area and the number of turns of the primary winding 1, the capacity C can be increased to hold the same oscillating frequency, and sinusoidal wave having excellent positive and negative symmetry can be generated. |
