zero crossing detector using transistors

[sokrat]

Hi all


i want to ask about zero crossing detector using transistors if any one have this circuit .

S 8O KRAT

 

[flatulent]

differential pair

You can make a traditional differential pair and put one input to ground and the other to your signal. The output will flip at the zero crossing point.

 

[ASIC]

if you can accept a crossing at 0.7V, why not use base-emitter junction?


ASIC