| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of an unintended high voltage output by additionally installing an auxiliary power supply circuit for supplying electric power from a low voltage power source for driving a high voltage transformer to a high voltage power source control circuit, thereby always supplying power source to the high voltage power source control circuit at the time of rising of drive voltage of the high voltage transformer. SOLUTION: An additional second power supply circuit 4 is provided for a high voltage power equipment equipped with a first power supply circuit supplying a drive power to a high voltage transformer and a third power supply circuit supplying power to a high voltage power source control circuit. Here, the second power supply circuit 4 comprises a transistor Tr11, resistor R11, R12, Zener diodes ZD11 and diode D11. And at the time of rising of a voltage Va of a low voltage power source of the first power supply circuit, the voltage Va of a low voltage power supply of the first power supply circuit is input, a voltage Vd is output to a high voltage power supply control circuit, the output voltage of the tired power supply circuit reaches the Zener voltage of the Zener diode ZD11, the output of voltage Vd is stopped. |
