| 摘要 |
PURPOSE:To prevent eccentric magnetization by detecting charge voltage of a high pressure side secondary capacitor, and installing a control circuit so that a primary side thyrister always conducts to both directions alternating current. CONSTITUTION:An operational amplifier A1 is a differential amplifier, and a setting tube voltage KVs is inputted to a non-inverting input terminal. A tube voltage level value KVr of a refraction point F is inputted to an inverting input terminal. When the setting tube voltage KVs is lower than the tube voltage level value KVr, the output of a comparator A1 is shut off with a diode D1. When the setting tube voltage KVs is higher than the level value KVr, the output of the comparator A1 becomes (KVs-KVr). The initial charging amount setting level value SKVr is inputted to the non-inverting input terminal of the comparator A2. When the output of the comparator is negative, the initial charging amount setting level value SKVr itself becomes the non-inverting input SKVr. When the output of the comparator A1 is positive, the output of the comparator A1 is added to the initial charging amount setting level value SKVr. |
