Precision zero cross detector( sine to square wave , ttl converter)

[joshua.svn]

Dear all,

can any body provide A zero cross detector.

my input frequency range is 0 Hz to 2 kHz, this frequency i want interface with micro 8051.

i have tried with lm 311 . not succeeded.

regards

joshua.svn@gmail.com

 

[Roff]

Post the schematic of what you tried.

 

[Inquisitive]

Hi Josua,

To be on the safe side remove your email address. If members need to contact you they can via private message under ETO protection.

You do not want to leave yourself open to spam bots.

 

[ChrisP58]

Also, what level of precision do you need? What is the P-P voltage of the sine wave?