eblc1388
Active Member
While searching the Net for zero crossing detector circuit, I came across the following circuit design idea that appeared in the EDN 12/14/2007 edition.
The link of the full article is here:
**broken link removed**
However, I have trouble understanding the value of the two capacitors being used. The schematic of Fig.2 is attached. The same capacitor values are used for another schematic(Fig.3) also. In my opinion, one capacitor should be for noise filtering and the other should be charge storage for a current source but their values are not appear to be appropriate.
Any comments?
The link of the full article is here:
**broken link removed**
However, I have trouble understanding the value of the two capacitors being used. The schematic of Fig.2 is attached. The same capacitor values are used for another schematic(Fig.3) also. In my opinion, one capacitor should be for noise filtering and the other should be charge storage for a current source but their values are not appear to be appropriate.
Any comments?