Timer for 12v system
Timer for 12v system
(OP)
Hello!
I am developing a prototype 12V system comprising a solenoid activated by a PIR sensor. I am looking for a timer device so that the power to the solenoid cuts 1 or 2 seconds after activation.
This is intended as a safety back-up. The PIR sensor should cut out after a minute but that's a bit long and sometimes the power to the solenoid is getting stuck on.
This timer looks suitable : Link (RS Stock No.: 178-5026).
Nb I asked RS directly but they referred me to their 'DesignSpark' forum which is very new I think and doesn't have many users.
Thanks
I am developing a prototype 12V system comprising a solenoid activated by a PIR sensor. I am looking for a timer device so that the power to the solenoid cuts 1 or 2 seconds after activation.
This is intended as a safety back-up. The PIR sensor should cut out after a minute but that's a bit long and sometimes the power to the solenoid is getting stuck on.
This timer looks suitable : Link (RS Stock No.: 178-5026).
Nb I asked RS directly but they referred me to their 'DesignSpark' forum which is very new I think and doesn't have many users.
Thanks
RE: Timer for 12v system
Don't forget to buy the socket that goes with that relay.
RE: Timer for 12v system
RE: Timer for 12v system
RE: Timer for 12v system
This isn't my field and I am a bit confused about the definitions. So bear with me here please.
So what I mean is that the normal situation is that there is no power to the solenoid. Then the PIR sensor detects something and power is switched on. (So I'm not sure if that means it is normally open or normally closed).
Do you think the RS device can be set up to work or should I be looking for something else?
Thanks again
RE: Timer for 12v system
I'm not sure what you're doing exactly or intended user, building your own circuit might be more suitable. Or try Ebay, lots of small open circuit board stuff available there for 12VDC.
RE: Timer for 12v system
RE: Timer for 12v system