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| Thread ID: 77065 | 2007-02-25 19:00:00 | Energy saving lamps not in dimmers - why ? | Digby (677) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 528129 | 2007-02-25 23:25:00 | Dimmed lights use less energy, as less power is going into the light. Simply speaking a dimmer slows down the flow of energy going into the bulb. Whaaaaa???? SLOWS DOWN THE LAWS OF PHYSICS? :rolleyes: :waughh: :blush: :p |
SurferJoe46 (51) | ||
| 528130 | 2007-02-26 02:27:00 | Whaaaaa???? SLOWS DOWN THE LAWS OF PHYSICS? :rolleyes: :waughh: :blush: :p It was being explained in simple terms. Eg it is like a fawcet only letting out a small amount of water, instead of being turned on fully. A fawcet opened up halfway is going to use less water than a fawcet that is fully open. People would get confused if you mention amps volt and and watts when youi mention dimmer switches. |
rogerp (6864) | ||
| 528131 | 2007-02-26 03:21:00 | It was being explained in simple terms. Eg it is like a fawcet only letting out a small amount of water, instead of being turned on fully. I hope you mean a faucet, because attempting to turn on a Fawcet might lead to all sorts of uncontrollable events and you could suffer a Major injury. That's if the $6M man is still on the scene, which I doubt. SJ may know. Cheers Billy 8-{) :D |
Billy T (70) | ||
| 528132 | 2007-02-26 06:56:00 | Billy T...........If one can use a remote to turnthe TV sound up/down, would it be possible to do the same with these new curly fluos?.. One unit, same frequency, to dim all brands? PJ | Poppa John (284) | ||
| 528133 | 2007-02-26 09:49:00 | Billy T...........If one can use a remote to turnthe TV sound up/down, would it be possible to do the same with these new curly fluos?.. One unit, same frequency, to dim all brands? PJ Look Here (www.totallywired.co.nz) for the technology PJ, fluoro dimmers will be elsewhere and need more searching, as will a remote version. Cheers Billy 8-{) |
Billy T (70) | ||
| 528134 | 2007-02-26 12:22:00 | Medical installations have dimmable flourescents, but the controllers are hellishly expensive. The old iron cored CFL "jam jar" eco lamps would self destruct when dimmed, seen a large building go through 100's a week until they woke up as to why, that is when they were $30 each... Present eco lamps are built to a price, and there is no dimmable electronics in that price. If there were, I suspect that the affordability and economics may diminish, as dimming flouro's is not straightforward. The dimmers actually fundamentally alter the AC waveshape, in no way do they act as a "faucet" or a limitation of the voltage applied. It's a lot more complex. |
godfather (25) | ||
| 528135 | 2007-02-26 20:14:00 | The dimmers actually fundamentally alter the AC waveshape, in no way do they act as a "faucet" or a limitation of the voltage applied. It's a lot more complex.But it's quite a good analogy GF. A dimmer does not alter voltage (pressure) but reduces current (flow) in order to reduce power (light output). A faucet does not alter supply pressure either, just flow, but the wheels fall off the analogy at that point because output pressure does drop. Dimming fluoros is much easier now with high frequency electronic ballasts. Lutron (www.lutron.com) have considerable experience in the field, and This Page (members.misty.com) is a very good explanation of the principles of discharge lighting, including cold cathode fluorescents and also has details of experiments carried out by various individuals. Note that it may read as though the filaments are constantly powered, but in fact in a standard fixture they are only heated during start up. After that, their temperature is maintained by the discharge current, which is one of the reasons why generally speaking it is not possible to fully dim fluorescents to "intimate" lighting levels without adding further technology to maintain filament temperature. Cheers Billy 8-{) |
Billy T (70) | ||
| 528136 | 2007-02-26 20:41:00 | I've found some websites selling dimmable "eco" bulbs but the fish hook is they are supposed to be run at full brightness for some minutes before being dimmed. Who would remember to return ordinary rotary dimmers to full each time? |
PaulD (232) | ||
| 528137 | 2007-02-26 21:02:00 | . . . . . That's if the $6M man is still on the scene, which I doubt . SJ may know . Cheers Billy 8-{) :D Very pun-y! Yeah . . . he's still around, but prices as they are for old actors (William Shatner, and Jerry Lewis-types) have him on the discount shelves at $1 . 98US . . . . good on ya for catching that! Hear about the guy who went to USC and got a PhD in "Egyptian Plumbing"? He was a "Pharaoh Faucet Major" nyuck, nyuck! :blush: BTW: I just got back from shopping . . . and 'lo and behold . . . I bought dimmable light bulbs . . . . let me see if I can find a URL for the company . . . brb . . . Found it . . . Is James around? It's in Chinese . . . . LINK (http://www . ulighting . com . cn/) on this page, go down to the DUE type bulb . and here's a close-up pix: LINK ( . ulighting . com . cn/Products/IMG/SRE_B . JPG" target="_blank">www . ulighting . com . cn) here's the specs on the dimmable DUE-type bulb ( . ulighting . com . cn/Products/electronic/DUE . htm" target="_blank">www . ulighting . com . cn) . . . notice they show a 240 volt unit, although mine are 120 volt for the US . . so I know they are available for youse guys . The box in which the ones I bought say the power factor is >0 . 90 . . . . so it's either a later product than the online specs signify, or they aren't telling the truth somewhere . I think the inscrutable Chinese would not intentionally confuse . Must be a translation factor . |
SurferJoe46 (51) | ||
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