B
Bessie
I have been asked to install a time-delay switch for the car park lighting at our village hall.
At present there is a single (2-pole) switch inside the building which controls the outside (bollard lights). However, when closing up the building on dark nights, once the bollard lights have been switched off, the car park is pitch dark.
What we would like is a delay function so that, when the lights are switched off, there is a 10 minute delay before they actually go off – leaving time for the last person out to get to their car.
I can see that it could be done using a simple pneumatic delay with a 2-way switch arrangement, but that might be too-complicated - we don't want the lights left on all night. What I'm looking for is something like the way a bathroom fan works, but for a lighting circuit. When lights are switched on, they stay on; when switched off, they stay on for 10 minutes then go off.
Switching load is <1.5A (compact fluorescent).
Any suggestions?
At present there is a single (2-pole) switch inside the building which controls the outside (bollard lights). However, when closing up the building on dark nights, once the bollard lights have been switched off, the car park is pitch dark.
What we would like is a delay function so that, when the lights are switched off, there is a 10 minute delay before they actually go off – leaving time for the last person out to get to their car.
I can see that it could be done using a simple pneumatic delay with a 2-way switch arrangement, but that might be too-complicated - we don't want the lights left on all night. What I'm looking for is something like the way a bathroom fan works, but for a lighting circuit. When lights are switched on, they stay on; when switched off, they stay on for 10 minutes then go off.
Switching load is <1.5A (compact fluorescent).
Any suggestions?
