t**g 发帖数: 1164 | |
u****q 发帖数: 24345 | |
l*****e 发帖数: 123 | 3 If you want to use energy saving light bulbs, you have to buy the special
dimmable ones. They are much more expensive (more than 10 dollars each).
My kitchen has 6 high hats with Dimmable switches. I replaced the switches
with non-
dimmable ones because the kitchen looks better when brighter. I never dim
them. |
t**g 发帖数: 1164 | 4 thanks. 我主要是觉得在厨房搞个bar台,装上可dimmable的吊灯,昏暗的光线感觉比
较有情调(当然做饭的时候还是开全亮)
【在 l*****e 的大作中提到】 : If you want to use energy saving light bulbs, you have to buy the special : dimmable ones. They are much more expensive (more than 10 dollars each). : My kitchen has 6 high hats with Dimmable switches. I replaced the switches : with non- : dimmable ones because the kitchen looks better when brighter. I never dim : them.
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m*f 发帖数: 8162 | |
l*****e 发帖数: 123 | 6 For bar area, I am using dimmable swith with old fashioned Incandescent
Light Bulb. It gives you more bar feeling:) |
J**S 发帖数: 25790 | 7 这种可调光的灯,耗电是不是固定的,即使你把亮度调低? |
b*****x 发帖数: 3786 | 8 我也这样想, 暗了后只是把电耗在电阻上而已。
【在 J**S 的大作中提到】 : 这种可调光的灯,耗电是不是固定的,即使你把亮度调低?
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l*****e 发帖数: 123 | 9 Watt=UxI, U is constant (110V), I is decreasing. So the total power used is
decreasing. |
J**S 发帖数: 25790 | 10 你想想为啥I会下降?
还有你确认,U就不变?
is
【在 l*****e 的大作中提到】 : Watt=UxI, U is constant (110V), I is decreasing. So the total power used is : decreasing.
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g*q 发帖数: 26623 | 11 绝大多数dimmer都是用电感,P=U*I*cosphi,加电感后电流下降,功率因数下降,但是电感
能耗很低.要是加电阻的话,很多dimmer会非常非常烫
【在 J**S 的大作中提到】 : 你想想为啥I会下降? : 还有你确认,U就不变? : : is
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b*****x 发帖数: 3786 | 12 狗了一下:
Old dimmers did not save electricity. They used resistors to restrict the
flow of electricity to the bulb, but the resistor would just convert all the
extra energy to heat, which was incredibly inefficient and did not actually
use less electricity.
Newer dimmers take advantage of alternating current (AC) power by cutting
off the flow of energy to the bulb for a short time when the current
switches direction. This does save energy because the light is actually
turning on and off rapidly, so there is less electricity being let into the
system. |
g*q 发帖数: 26623 | 13 实际上电阻dimmer历史上就基本上没有存在过.自打用交流电以来,就是用的电感式
dimmer,耗电不会很多,最坏的情况也就是灯泡功率的5-10%.近年来都用半导体triac,比
电感式的更省.
the
actually
the
【在 b*****x 的大作中提到】 : 狗了一下: : Old dimmers did not save electricity. They used resistors to restrict the : flow of electricity to the bulb, but the resistor would just convert all the : extra energy to heat, which was incredibly inefficient and did not actually : use less electricity. : Newer dimmers take advantage of alternating current (AC) power by cutting : off the flow of energy to the bulb for a short time when the current : switches direction. This does save energy because the light is actually : turning on and off rapidly, so there is less electricity being let into the : system.
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J**S 发帖数: 25790 | 14 是不是把灯开暗,过一定时间,如果DIMMER SWITCH不发烫,那么电能主要是耗在灯泡
上了。
可不可以这样测试一下?
【在 g*q 的大作中提到】 : 实际上电阻dimmer历史上就基本上没有存在过.自打用交流电以来,就是用的电感式 : dimmer,耗电不会很多,最坏的情况也就是灯泡功率的5-10%.近年来都用半导体triac,比 : 电感式的更省. : : the : actually : the
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g*q 发帖数: 26623 | 15 不用试,就没有那种电阻式的dimmer卖,有的话放在那么个小盒子里必然起火.
电感式的会稍微有点热,就跟你的charger什么的那样.
Triac式的耗电更少.现在卖得主要是triac的
【在 J**S 的大作中提到】 : 是不是把灯开暗,过一定时间,如果DIMMER SWITCH不发烫,那么电能主要是耗在灯泡 : 上了。 : 可不可以这样测试一下?
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J**S 发帖数: 25790 | 16 那具体分析一下这个吧,我买的这个, 产品说明也没有说这个开关的原理。
http://www.amazon.com/gp/product/B0014A6NJ2/ref=oh_details_o07_
我装上用了,也没有任何发热的感觉。
【在 g*q 的大作中提到】 : 不用试,就没有那种电阻式的dimmer卖,有的话放在那么个小盒子里必然起火. : 电感式的会稍微有点热,就跟你的charger什么的那样. : Triac式的耗电更少.现在卖得主要是triac的
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c*****h 发帖数: 14923 | 17 喜欢
家里很多地方都是这种灯
【在 t**g 的大作中提到】 : 看起来不错,感觉可以把房间调亮调暗,有情调?
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A********0 发帖数: 3310 | |
d********r 发帖数: 9331 | 19 啥情调,结婚了就实在点,黑咕隆咚的交出情人或x的名字就惨了。 |
c****o 发帖数: 32446 | |
j****i 发帖数: 68152 | 21 一群理工男很可悲啊。现在的dimmer都是用开关二极管。相当于快速的开灯关灯。开关
的频率很高,所以你感觉到的是平均亮度。开的时间长,关的时间短,感觉亮度就高,
反之就暗。
高学历的文盲,真可悲啊,愚昧 |