也做个阻抗相对齐全的RMAA测试盒(业余)
趁着假期的空档时间, 也做个阻抗相对齐全的RMAA测试盒, 对于业余爱好者来说是已是足够.现在做RMAA测试盒不算太迟吧!!:D
暂时可以测试 4欧姆~10K欧姆阻抗的, 小于10W的功率.
因为我这里买不到琴键开关, 所以只有用继电器+拨动开关来实现功能..
唉!! 搞到连线灰常多...:L
手机照的相, 不是好清晰...将就将就..:D
https://lh3.googleusercontent.com/-i-3Y5ls-H2A/Ub1m9wGqYaI/AAAAAAAAAxI/81FVeTnDCng/s720/16062013381.jpg?gl=CN
https://lh4.googleusercontent.com/-EAZLYIaNEL0/Ub1l7SkplwI/AAAAAAAAAv4/xXf6ew9YV_k/s720/12062013367.jpg?gl=CN
https://lh6.googleusercontent.com/-RNcDw3-Sl7s/Ub1mBKUEslI/AAAAAAAAAwA/ZLSDIT7dAcM/s720/12062013368.jpg?gl=CN
https://lh4.googleusercontent.com/-92Y6QxnY8FQ/Ub1mIXCtMOI/AAAAAAAAAwI/CLyktf6Dvbk/s720/16062013371.jpg?gl=CN
https://lh6.googleusercontent.com/-6kNHSKEKILA/Ub1mRSM_EBI/AAAAAAAAAwQ/O95Tp94fYYc/s720/16062013373.jpg?gl=CN
https://lh6.googleusercontent.com/-T0kMfZeV4CY/Ub1mZ4vFR4I/AAAAAAAAAwY/-a8SoQE6_X4/s720/16062013374.jpg?gl=CN
https://lh4.googleusercontent.com/-8v7If2Um_1c/Ub1mgZkJZCI/AAAAAAAAAwg/2WK2Na5e4Vk/s720/16062013375.jpg?gl=CN
https://lh3.googleusercontent.com/-JhY3XylKRus/Ub1mmVpcJ8I/AAAAAAAAAwo/phFAeaAnDCI/s720/16062013377.jpg?gl=CN
https://lh5.googleusercontent.com/-_RKEB1HbRj4/Ub1mrQWGC3I/AAAAAAAAAww/JMhaCL-loeY/s720/16062013378.jpg?gl=CN
https://lh4.googleusercontent.com/-O62KCGi6yzk/Ub1mxeTJtEI/AAAAAAAAAw4/_o4KEY1Bhrk/s720/16062013379.jpg?gl=CN
https://lh5.googleusercontent.com/-buocyXngfTs/Ub1m3w1ErGI/AAAAAAAAAxA/TBHnO7Ax0XI/s720/16062013380.jpg?gl=CN
这个是原理图, 是将开关串联来实现.
https://lh5.googleusercontent.com/-pvTWAREtpmM/Ub1nFvTZC5I/AAAAAAAAAxQ/dYFJaFmsJ-o/s720/16062013382.jpg?gl=CN 声卡的line in还有输入电阻，你搞成这样，够辛苦的。 順便也做了对连接线...
https://lh3.googleusercontent.com/-wdg4VFDSde4/Ub2SKW-0KdI/AAAAAAAAAxo/z4Ufwli0gTM/s720/16062013383%2520%25E5%25A4%258D%25E5%2588%25B6.jpg?gl=CN
在线皮上的箭头方向代表信号的流向...
https://lh5.googleusercontent.com/-Q5JRHKUazYM/Ub2SBpJRE8I/AAAAAAAAAxg/W7YZere5bMo/s960/16062013384%2520%25E5%25A4%258D%25E5%2588%25B6.jpg?gl=CN 很不错 辛苦了
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