??? 04/22/10 13:23 Read: times |
#175271 - i think so Responding to: ???'s previous message |
Did You tried 1Mohm ZCD ? It worked with PIC, but are You sure it will work with 8051?
I suppose at least big delay in falling edge , relative to real zero-cross. On other hand - (seeing from far away) - i think only one Zero-crossing (to + or to -) is needed. Other can be obtained by 16 bit timer. Good luck. |