I have summarized it here. I hope you guys don't mind the trouble. Copy and paste it. http://community.eeworld.net/Expert/topic/5556/5556085.xml?temp=.7305414 Sincerely ask for your advice...
It is OK to use optocoupler as switch under normal circumstances, but the output end needs to provide power (pull-up 10K). Now I want the output end to be a switch. If I use relay, it will be too big....
In 1927, Bell Labs in the United States introduced the revolutionary negative feedback (NFB) technology, marking the beginning of a new era for audio amplifiers. The Williamson amplifier, released in ...
Special creative space tools to complete super missions Recently, American scientists have carried a total of 180 special creative tools to repair the Hubble Space Telescope, and 116 of them are speci...