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Dusk to Dawn Bulbs
I have two dusk to dawn fluorescent bulbs, I have placed in my house ,
although they come on at dusk they keep switching on and off during the night, they came from Toolstation and I have exchanged one and the new one is just the same , Any tips on how to position these bulbs and if they would be better without lamp shades, or would they perhaps be faulty Thanks E |
Dusk to Dawn Bulbs
On 30 Jul, 13:54, "Ed" wrote:
I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, they came from Toolstation and I have exchanged one and the new one is just the same , Any tips on how to position these bulbs and if they would be better without lamp shades, or would they perhaps be faulty Thanks E Maybe the light sensor is seeing the lamp's own light reflected back at it, and thinking its daylight. Solution would be to shield the sensor from the light from the bulb as far as poss. NT |
Dusk to Dawn Bulbs
"Ed" wrote in message ... I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, they came from Toolstation and I have exchanged one and the new one is just the same , Any tips on how to position these bulbs and if they would be better without lamp shades, or would they perhaps be faulty Thanks E Elimination,have you tried them elsewere in the house ie another room |
Dusk to Dawn Bulbs
wrote in message ps.com... On 30 Jul, 13:54, "Ed" wrote: I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, they came from Toolstation and I have exchanged one and the new one is just the same , Any tips on how to position these bulbs and if they would be better without lamp shades, or would they perhaps be faulty Thanks E Maybe the light sensor is seeing the lamp's own light reflected back at it, and thinking its daylight. Solution would be to shield the sensor from the light from the bulb as far as poss. NT The sensor is on the case of the bulb just above the bayonet cap |
Dusk to Dawn Bulbs
"George" wrote in message k... "Ed" wrote in message ... I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, they came from Toolstation and I have exchanged one and the new one is just the same , Any tips on how to position these bulbs and if they would be better without lamp shades, or would they perhaps be faulty Thanks E Elimination,have you tried them elsewere in the house ie another room Will do to-night |
Dusk to Dawn Bulbs
On Mon, 30 Jul 2007 13:54:43 +0100 someone who may be "Ed"
wrote this:- I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, How rapidly do they switch on and off? If this is less than say every five minutes they are probably seeing the light from the lamp. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
Dusk to Dawn Bulbs
"David Hansen" wrote in message ... On Mon, 30 Jul 2007 13:54:43 +0100 someone who may be "Ed" wrote this:- I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, How rapidly do they switch on and off? If this is less than say every five minutes they are probably seeing the light from the lamp. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 Two to three minutes , but as the sensors are on the bulb case they probably wont work in a normal pendant fitting near a window |
Dusk to Dawn Bulbs
I had some hassle with these - if you mean the energy saving ones. Firstly,
they only seem to come down as low as 15W, which is much too bright and glary for what I was using them for - lighting an outside flight of steps. They were also very expensive and very short lived. Eventually, I gave up on the built in sensors, and just bought a single photo switch of the type used in street lights, and it has now been reliably turning on and off a series of 4, 7w cfls for a couple of years, with no lamp failures yet. Very good. S "Ed" wrote in message ... "David Hansen" wrote in message ... On Mon, 30 Jul 2007 13:54:43 +0100 someone who may be "Ed" wrote this:- I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, How rapidly do they switch on and off? If this is less than say every five minutes they are probably seeing the light from the lamp. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 Two to three minutes , but as the sensors are on the bulb case they probably wont work in a normal pendant fitting near a window |
Dusk to Dawn Bulbs
On Mon, 30 Jul 2007 22:20:15 +0100 someone who may be "The Medway
Handyman" wrote this:- Maybe the light sensor is seeing the lamp's own light reflected back at it, and thinking its daylight. Solution would be to shield the sensor from the light from the bulb as far as poss. I've always been puzzled as to how these things work. If their own light can turn them off, how do they ever turn on? Is it a different wavelength or something? Their own light can turn them off if it is reflected back from the luminaire to the sensor. This can happen with the type of luminaire that has metal bands around a glass envelope. I would use a remote sensor if doing this with a table or standard lamp, which appeared to be what the original question was about. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 |
Dusk to Dawn Bulbs
"David Hansen" wrote in message Their own light can turn them off if it is reflected back from the luminaire to the sensor. This can happen with the type of luminaire that has metal bands around a glass envelope. I would use a remote sensor if doing this with a table or standard lamp, which appeared to be what the original question was about. -- David Hansen, Edinburgh I will *always* explain revoked encryption keys, unless RIP prevents me http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54 I use these less hassle and can be rando times to come on and off throughtout the week. http://www.argos.co.uk/static/Produc...er/9827992.htm |
Dusk to Dawn Bulbs
On 30 Jul, 16:46, "Ed" wrote:
wrote in message ps.com... On 30 Jul, 13:54, "Ed" wrote: I have two dusk to dawn fluorescent bulbs, I have placed in my house , although they come on at dusk they keep switching on and off during the night, they came from Toolstation and I have exchanged one and the new one is just the same , Any tips on how to position these bulbs and if they would be better without lamp shades, or would they perhaps be faulty Thanks E Maybe the light sensor is seeing the lamp's own light reflected back at it, and thinking its daylight. Solution would be to shield the sensor from the light from the bulb as far as poss. NT The sensor is on the case of the bulb just above the bayonet cap Indeed. Ensure it points as towards the window as poss, reduce lampshade reflection, and if still necessary glue a bit of black card on to reduce light from the lamp falling on the sensor. As has been said, sensor built into bulb isnt very smart as you have to repeatedly replace the sensor every time the bulb goes. I dont know why anyone buys them. NT |
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