| CT-X2型电话计费器电源电路的改进 |
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| 引用本文： | 羊波.CT-X2型电话计费器电源电路的改进[J].玉溪师范学院学报,2000(3). |
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| 作者姓名： | 羊波 |
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| 作者单位： | 玉溪师范高等专科学校物理系!云南玉溪653100 |
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| 摘 要： | 本文对CT -X2型直拨电话计费器的电源电路进行重新设计 ,使此种电话计费器在交流断电八小时内正常工作
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| 关 键 词： | 电话计费器 DC-DC电源变换器 后备电池 |
Improvement of Power-supply Circuit Of CT-X2 Fee Calculator for Telephone |
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| YANG Bo.Improvement of Power-supply Circuit Of CT-X2 Fee Calculator for Telephone[J].Journal of Yuxi Teachers' College,2000(3). |
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| Authors: | YANG Bo |
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| Abstract: | The power-supply circuit of CT-X2 fee calculator for the direct dialing telephone has been redesigned in this paper, which has made the fee calculator working normally in 8 hours after AC breaking down. |
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| Keywords: | Fee calculator for telephone DC-DC power convertor backup-batterty |
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