Folks,
 
I have a strange problem here. I have an AC to DC converter circuit that is powering a PIC16F873A that is connected to a 2x16 LCD. When the unit is connected to the AC line (US 60Hz) the PIC does not begin it's program (LCD has nothing but bars). The +5V regulator has a solid +5V, but as soon as I unplug the AC cord the program begins to run (large filter cap) until the filter cap discharges (LCD displays prompt). Could this be from the 60Hz noise causing problems or ... ? Any ideas, recommendations or "magic" pointers out there?
 
Thanks ahead of time!
 
Estevan.



      
-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist