rohithkrishnan
Junior Member level 3
Hi
I'm trying to design a PIR that has a range of 10m .Design i used for that is above . When i to probe at output of second stage amplifier, a noise with 0.5Hz is seen which is causing false detection .I've tried to reduce the range to 5m but the noise presence is still there . i just removed the PIR and checked the output it was clean. Please help me to solve this .
Thankzz