How to wire a 12v PIR?
I am using a 12 volt Honeywell PIR sensor(passive Infrared sensor), like the type you get in a burglar alarm in my Volvo restoration project.
Basically, I have wired up the PIR so that when it detects something, a 12 volt Volvo relay will switch, and activate another device.
The only problem with this Volvo relay is that it draws 210 Milliamps through the PIR, and the PIR is only rated at 90 Milliamps. Consequently, the PIR gets rather hot, and eventually, I managed to burn one out because I left it on for too long.
Is there any way to reduce the 210 Milliamps going through the PIR to something more in the reigon of 90 milliamps, to prevent this from happening? Perhaps by using another component?
Not really my territory but…
Doesn’t seem so. Why can’t you use a relay that takes less current to do the same job? I think that’s what you’ll wind up doing.
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I'm a former airline Captain and airline flight instructor, with a long life passion for classic cars. My swedish heritage gave me a weakness for classic Volvos