The self-excitation to oscillate due to the impulse control

摘要

PROBLEM TO BE SOLVED: To reduce effect of capacitance between an output end of a self-oscillation booster circuit and a destaticizing electrode, thereby a cable length can be extended and adjustment for balancing between positive ions and negative ions can be performed.;SOLUTION: The pulse control power supply device for a static eliminator includes: a low-pulse-repetition-frequency pulse oscillation circuit 6 for generating a low-pulse-repetition-frequency pulse, the repetition-frequency is lower than a frequency of high frequency and high voltage generated by a self-oscillation booster circuit 3; a pulse-width variable resistor 7 for varying a pulse width; a frequency variable resistor 8 for varying the pulse-repetition-frequency; a switching circuit 5 which turns the high frequency and high voltage output from the self-oscillation booster circuit 3 to have an intermittent period according to the pulse-repetition-frequency, with a width depending on the pulse width, by switching the high frequency and high voltage by the pulse from the low-pulse-repetition-frequency pulse oscillation circuit 6; and a capacitor C1 connected between the destaticizing electrode B and a secondary side of a high-voltage transformer 1 of the self-oscillation booster circuit 3 and interrupting a DC discharge current from the destaticizing electrode B.;COPYRIGHT: (C)2011,JPO&INPIT