HELP for a cmos single zone

C

Chris_x_gr

New Member

• Apr 13, 2007

• #1

Hello everybody!!! i have a problem with this alarm -->> **broken link removed**
I have made this circuit,i'm testing it but something goes wrong,if someone check this page just tell me to ask my questions thanks

 

J

j.p.bill

New Member

• Apr 13, 2007

• #2

"Something goes wrong" is a bit hard to interpret. Perhaps you could elaborate on that.

 

mramos1

Active Member

• Apr 13, 2007

• #3

I would think they were very clear and wired it wrong. But agree. More details please.

EDIT: Did you write to Ron first?

 

Last edited: Apr 13, 2007

K

kchriste

New Member

Forum Supporter

• Apr 13, 2007

• #4

Probably the thing you've missed is connecting pin 14 of the 4081 CMOS IC to 12V and pin 7 to 0V. The schematic diagram is not very clear on this and it is pretty easy to miss for a beginner.