发明名称 |
Piezoelectric transformer driving device, cold-cathode tube inverter, cold-cathode tube driving device, and image forming apparatus |
摘要 |
A piezoelectric transformer driving device including: an oscillator; a frequency-divider outputting a pulse by dividing a clock signal from the oscillator by a frequency-divide ratio received thereto; a switching element driven by the pulse and intermittently applying a voltage to a primary side of a piezoelectric transformer; a frequency-divide ratio instructing unit holding a frequency-divide ratio instruction value of a real number having an integer part and an fractional part; a binarization unit binarizing the frequency-divide ratio instruction value into two different integer frequency-divide ratios and selectively outputting the frequency-divide ratios. The binarization unit adjusts an appearance ratio of the frequency-divide ratios such that an average of the frequency-divide ratios output from the binarization unit is equal to an average of the frequency-divide ratio instruction value. |
申请公布号 |
US8174200(B2) |
申请公布日期 |
2012.05.08 |
申请号 |
US20100694321 |
申请日期 |
2010.01.27 |
申请人 |
KOSAKA TORU;YAJI MASAO;HAGIWARA AKIRA;OKI DATA CORPORATION |
发明人 |
KOSAKA TORU;YAJI MASAO;HAGIWARA AKIRA |
分类号 |
H05B37/02;H01J29/96 |
主分类号 |
H05B37/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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