J-K counter and photoresistor

[mmk]

Hi
I got a prblem.
I have numbers of phtoresistors,each of them I put it in voltage divider circuit to take this dividered voltage as an clock input to J-K counter 74xx76, this voltage increas when the the light decreas .I toke one photoresistor cct and step up my hand over it but the counter did not take it.
first ,I need somthing to put all these photo cct output together as one input to the counter.
secand ,I need to put somthing between the photo cct and the counter to regulate the voltage that came from the photo cct.

 

[IanP]

555 timer in Schmitt-Trigger configuration may be useful .. see picture below ..

Regards,
IanP

 

[mmk]

I tried to put schmitt trigger but the problem is if I take it as IC there is limitation,and if I take it as a circuit the output voltage of schmitt as i know is from +E to -E (+15 to -15,OP) is bad as input for jk counter.
I`ll try it, thans.