| 摘要 |
PURPOSE:To prevent the malfunction of a horizontal outputting circuit, and to improve the reliability of a circuit operation and the stability of a picture without allowing a horizontal drive circuit to have a large time constant. CONSTITUTION:The output of a horizontal oscillation circuit 11 is supplied to the base of a drive transistor 16. The connecting point of the transistor 16 with a load resistor 17 is connected with the gate of an FET 18 for a horizontal output. A resistor 31 is connected between the gate and source of the FET 18. The drain of the FET 18 is connected through a fly-back transformer 19 with a power source terminal 12. An equipment 20 is an oscillation capacitor, and an equipment 21 is a horizontal deflection coil. Thus, the gate voltage of the FET 18 can be suppressed by the resistors 17 and 31, the FET 18 can be prevented from being turned on before the horizontal oscillation circuit 11 is operated, and inconvenience that excessive currents run through the horizontal outputting circuit, and the fuse of a power source circuit is burnt out can be prevented, so that the reliability of the circuit can be improved. Also, it is not necessary allow the drive circuit to have the large time constant for preventing the malfunction, and the stability of the picture can be prevented from being deteriorated. |
