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摘要: 分析此故障为电源电压偏低所致。测开关电源各输出电压,分别为+125V、+68V和+16V均正常,说明开关电源工作在收视状态。该机场输出供电是取自T702{6}、{2}绕组输出的行逆程脉冲,经D705、C737整流滤波后由R631提供。用万用表测此电压为22V(正常值应为25V),说明行输出电压偏低。试代换行管Q708无效。再代换T702试
型号 | 厂商 | 价格 |
---|---|---|
EPCOS | 爱普科斯 | / |
STM32F103RCT6 | ST | ¥461.23 |
STM32F103C8T6 | ST | ¥84 |
STM32F103VET6 | ST | ¥426.57 |
STM32F103RET6 | ST | ¥780.82 |
STM8S003F3P6 | ST | ¥10.62 |
STM32F103VCT6 | ST | ¥275.84 |
STM32F103CBT6 | ST | ¥130.66 |
STM32F030C8T6 | ST | ¥18.11 |
N76E003AT20 | NUVOTON | ¥9.67 |
型号/产品名 | 平均报价 | 涨跌幅 |
---|---|---|
STM8S003F3P6 | 1.55 | 1.12% |
74HC573D | 0.64 | 2.86% |
2N7002 | 3.66 | 400.00% |
STM32F103C8T6 | 7.47 | 27.87% |
1N4007 | 1.58 | 0.00% |
ADM2483BRWZ | 8.31 | 31.36% |
SHT10 | 16.21 | 5.88% |
STM32F103RCT6 | 12.56 | 24.44% |
78L05 | 10.55 | 66.67% |
LM358 | 118206.75 | 16.67% |
TPS74601PBQWDRVRQ1 3000 件
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TPS7A3701DRVR 3000 件
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TPS7A3701DRVT 3000 件
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