In SX Microcontrollers, SX/B Compiler and SX-Key Tool, JonnyMac wrote: My ZC output is tied high too, but when the AC level causes the either of the LEDs on the opto's input to conduct the output line is pulled low, hence the output from my ZC circuit is a high-going pulse every 8.333 milliseconds. ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=263685#m285902 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2008 (http://www.dotNetBB.com)