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1
Post |
Posted
11/1/2005
I have a cold cathode tube that I want to use as a motion sensor night light. I currently have a pc power supply (350w) and power cable, the cold cathode tube and a motion sensor for this project. All the bits I actually had lying around so I wanted to put them to use.
Whats confusing me so far is that the diagram on the motion sensor shows places for a cable to be connected:
L <- (which I assume is Live - IN )
N <- (which I assume is Neutral - IN )
L -> (which I assume is Live - OUT )
Not you will have to forgive me as I'm not generally into electronics and never did any of this kinda stuff at school, so I'm a little ignorant about how to figure this out by myself.
My question is can someone explain to me how to connect my power cable to this ?
The colour coding on the power cable is blue, brown and yellow/green. I understand that brown is active, blue is neutral and yellow/green is earth. So I would assume that I cut the brown wire and connect 1 to each of the L <- and L -> connectors. But what should I do with the Neutral ?
Anyway.. any help would be greatly appreciated.
Cheers.
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1
Post |
Posted
13/1/2005
Hey,
Im not entirely sure but i would imagine that you connect it up something like
A (Brown) - L-> Motion Sensor - L> to light (Active)
N (Blue) ---- N -> Motion Sensor - to light (Nuetral)
If that diagram doens't help,
The motion sensor is essentially a switch, so when theres motion it "probably" switches the L-> input across to the ->L output. The L-> output would then run to the light and turn it on.
Cheers,
Steve
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Stu
12
Posts |
Posted
24/4/2005
Don't want to rain on your party but if you are not experienced with mains wiring I would tend to leave it alone. In the case of a faulty hook-up, you run the risk of electric shock, or fire, or both.
Best to leave mains wiring to someone experienced - seek assistance from someone local. Cheaper than coming home to a burnt out shell.
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Robert Heron
8
Posts |
Posted
18/2/2008
a bit late but...
if you don't understand that AC current actually flows in both directions and so for the purpose of single phase power it doesn't really matter which way around you connect the wires(except the ground, that always connects to ground ;), you should really look into it more and possibly revise your safety precautions. I'd also advise using regulation connectors and learning to use them properly.
Remember that high power relays tend to have a lower limit voltage which is a bit higher that you might be used to. Most of the relays sold for switching 240/11VAC won't switch below 24V.
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Help with a motion sensor