| 摘要 |
PURPOSE:To prevent a horizontal output transistor from damaging by controlling the output pulse width of a first and a second monostable multivibrator circuits with common electric information. CONSTITUTION:A second monostable multivibrator MM2 is provided between a horizontal oscillation circuit 1 and a horizontal oscillation circuit 2, and the pulse width of output rectangular is controlled by control direct current voltage Ec supplied from a common control terminal (c) along with a first monostable multivibrator MM1. Therefore, even when the time position of conductivity starting time T3 of collector current Ic of a horizontal output transistor 4 moves forward while narrowing the pulse width of the output pulse of the MM1, the position of time T2 moves forward similar to the position of the time T3, and the position of the time T2 can be positioned forward of that of the time T3 at all times. Thus, the damage of the horizontal output transistor 4 can be prevented. |
