| 摘要 |
PURPOSE:To minimize the heat generation and loss of the switching transistor(TR) of a horizontal output circuit by finding the collector voltage of the switching TR, i.e., the inclination of the leading edge part of an FBP and supplying the driving circuit of a horizontal driving circuit which minimizes the found value. CONSTITUTION:The inclination of the leading edge part is calculated from data obtained by reading the collector voltage (FBP) of the switching TR 13 of the horizontal output circuit 3 by a voltage read circuit 5 and a CPU 9 which performs control on the basis of the data according to an optimum driving voltage decision procedure finds and outputs an optimum driving voltage. Therefore, optimum driving is performed at all times without reference to variance of a horizontal frequency and the element of the switching TR 13 and the heat designing. |
