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Description: This is a single channel (on / off) universal switch that may be use...
Description: This is an improved IR remote control extender circuit. It has high ...
The infra red radiation is a region with bigger length of wave from the visible s...
现代居室、办公室等的照明线路大都采用走暗线（隐藏在墙内）...
Circuit diagram Notes: As I was developing my IR Extender Circuit, I needed to fi...
燃放烟火爆竹通常用火柴点火，但这种方法极不安全，点着引线...