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摘要: 开机听到喇叭发出“嘟嘟”声,测喇叭插座XS201的电压,1脚0V、3脚11.8V,XS202的1、3脚各电压5.9V,明显功放输出不良。拔掉XS20l,噪音消失,测功放MSH9000输入脚电压,3脚0.6V、4脚1V、7脚2.4v、8脚2.4V,3、4脚正常电压为2.4V左右,查MSH9000的3脚外接电容C209两端都是0.6V,两端阻值变小,更换C209(1UF/25
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 | 1.72 | 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% |
PIC16F505-I/SL 10000 件
13535226291
EM8622L-LFB 300 件
深圳福田区合芯元电子商行
EM8622L-LFB 200 件
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SN6505BDBVR 360 件
SN6505BDBVR 350 件