bellboy 4th Gear March 11, 2015 Share March 11, 2015 HI guys, I have a IKEA lamp with a dimmer function. The bulb (see below) that comes with it is super hot. I asked my nearby hardware shop and they said the LED bulb they sell can fit into the lamp head, but it cannot work with dimmer. If I adjust the dimmer, the bulb may blow. Why is that so? What bulb should I change to and where can buy? My main objective is to change to a not hot bulb. ↡ Advertisement Link to post Share on other sites More sharing options...
Lala81 Hypersonic March 11, 2015 Share March 11, 2015 (edited) I don't understand why. But anything LED based dimmer is going to be expensive. Even for my taobao night lamp, it costs 40+ SGD. Usually dimmers only work on the old school incandescent bulbs right. That's probably what you got, that's why it's so hot. Most Compact flourescent don't dim as well. Edited March 11, 2015 by Lala81 Link to post Share on other sites More sharing options...
Kangadrool Supersonic March 11, 2015 Share March 11, 2015 If you live without dimmer, get a LED replacement bulb with the correct wattage and lumens suitable for your desired ambience. I have a super bright LED bulb installed at my door entrance. It's on 24/7/365 and it does not feel hot or consume much electricity. Link to post Share on other sites More sharing options...
Watwheels Supersonic March 11, 2015 Share March 11, 2015 http://www.lazada.sg/shop-led-bulbs/ Link to post Share on other sites More sharing options...
Porker Turbocharged March 11, 2015 Share March 11, 2015 HI guys, I have a IKEA lamp with a dimmer function. The bulb (see below) that comes with it is super hot. I asked my nearby hardware shop and they said the LED bulb they sell can fit into the lamp head, but it cannot work with dimmer. If I adjust the dimmer, the bulb may blow. Why is that so? What bulb should I change to and where can buy? My main objective is to change to a not hot bulb. An incandescent bulb dims because the current that passes through the filament can vary. LED bulbs however doesn't work that way hence you need compatible dimmers. Link to post Share on other sites More sharing options...
bellboy 4th Gear March 11, 2015 Author Share March 11, 2015 (edited) If you live without dimmer, get a LED replacement bulb with the correct wattage and lumens suitable for your desired ambience. I have a super bright LED bulb installed at my door entrance. It's on 24/7/365 and it does not feel hot or consume much electricity. Its a good suggestion. But if I adjust the dimmer, will the bulb blow or spoil? An incandescent bulb dims because the current that passes through the filament can vary. LED bulbs however doesn't work that way hence you need compatible dimmers. Thanks for the technical reply. So if I vary the current using the dimmer, what happens? If nothing happens is fine. I just scared the LED bulb will blow. Which is what the hardware shop told me. Edited March 11, 2015 by bellboy Link to post Share on other sites More sharing options...
Angcheek Hypersonic March 11, 2015 Share March 11, 2015 Its a good suggestion. But if I adjust the dimmer, will the bulb blow or spoil? Thanks for the technical reply. So if I vary the current using the dimmer, what happens? If nothing happens is fine. I just scared the LED bulb will blow. Which is what the hardware shop told me. whatwheel already gave you the site ... bulb with dimmer. 3 Link to post Share on other sites More sharing options...
bellboy 4th Gear March 11, 2015 Author Share March 11, 2015 whatwheel already gave you the site ... bulb with dimmer. Wah bro.... its like telling me to change my car because I dont like my rims. Link to post Share on other sites More sharing options...
Angcheek Hypersonic March 11, 2015 Share March 11, 2015 (edited) Wah bro.... its like telling me to change my car because I dont like my rims. ohhh u wan Not Hot bulb .......... LED only lor . As the some here said, dimmer one cost more for LED. Edited March 11, 2015 by Angcheek 3 Link to post Share on other sites More sharing options...
Kangadrool Supersonic March 11, 2015 Share March 11, 2015 The least risk is to stick to the intended design of this lamp. I am sure Ikea lamps come with instructions and specification on type of bulb it can and cannot take. Always stay stock for electrical. If you have misplaced the leaflet, ask Ikea for one. Link to post Share on other sites More sharing options...
Watwheels Supersonic March 11, 2015 Share March 11, 2015 *facepalm* They sell dimmable led lightbulbs. http://www.lazada.sg/tisec-dimmable-led-bulb-9w-e27-cool-white-6000k-2-bulb-package-export-372408.html The example I gave, the head size is E27. You just have to check the size of your bulb and go search for the right one. It will not look exactly like your sample but for light bulbs as long as the size is correct it will screw in nicely. Link to post Share on other sites More sharing options...
Angcheek Hypersonic March 11, 2015 Share March 11, 2015 *facepalm* They sell dimmable led lightbulbs. http://www.lazada.sg/tisec-dimmable-led-bulb-9w-e27-cool-white-6000k-2-bulb-package-export-372408.html The example I gave, the head size is E27. You just have to check the size of your bulb and go search for the right one. It will not look exactly like your sample but for light bulbs as long as the size is correct it will screw in nicely. i think his concern is cost 4 Link to post Share on other sites More sharing options...
Volvobrick Supersonic March 11, 2015 Share March 11, 2015 http://www.dx.com/p/skled-e27-10w-780lm-6000k-32-3014-smd-led-white-light-dimmable-bulb-white-ac-110v-323036#.VQAMV41EioE Like this? Search this website maybe there is cheaper alternative. Definitely at 10W it won't be hot. For table lamp, 6-7W LED bulb is already very bright. Should be less than USD 10. Link to post Share on other sites More sharing options...
bellboy 4th Gear March 11, 2015 Author Share March 11, 2015 Thanks all for the inputs. Does that mean as long as I buy a LED bulb that is dimmable, then can do? I dont need a compatible dimmer like what Porker said? Link to post Share on other sites More sharing options...
Kb27 Supersonic March 11, 2015 Share March 11, 2015 For incandescent bulb, usually the dimmer adjust duty cycle of AC voltage. Less duty cycle, less brightness of the bulb. In LED, the brightness depends on the driver providing constant current. To get more brightness, you increase the current and vice versa. PWM method is more effective, but cost is higher. http://www.electronicproducts.com/Optoelectronics/LEDs/LED_101_How_do_dimmable_LEDs_work.aspx So the 2 types of dimmer are not necessary compatible. The cheaper and worst kind of dimmer is probably using adjustable resistor. All the heat is dumped on the resistor, making it very hot. Link to post Share on other sites More sharing options...
Porker Turbocharged March 11, 2015 Share March 11, 2015 i think his concern is cost Epic avatar you have there Link to post Share on other sites More sharing options...
Watwheels Supersonic March 11, 2015 Share March 11, 2015 Why it has to be so complicated ? The dimmer control is a variable resistor to add "resistance" to the incoming current. Less resistance means brighter, more resistance means less bright. Simple as that. A dimmable led bulb has built in circuit to "adapt" to the variable input current. A regular led bulb doesn't has such a built in circuit. Link to post Share on other sites More sharing options...
Kklee 6th Gear March 11, 2015 Share March 11, 2015 The image posted looks like 150W which is a lot of lumens. LED replacement would be at least 23W. ↡ Advertisement Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In NowRelated Discussions
Related Discussions
100 inch TV or projector for home theatre
100 inch TV or projector for home theatre
Red-light camera + speed camera from 1 Apr 2024
Red-light camera + speed camera from 1 Apr 2024
Checklist: Things to look out for when buying a place
Checklist: Things to look out for when buying a place
House painting
House painting
Quad Light Bulb Size
Quad Light Bulb Size
Suu Kyi detained
Suu Kyi detained
Recommendations for light kitchen carpentry and sink works
Recommendations for light kitchen carpentry and sink works