ChknFngr Posted October 17, 2020 Member ID: 922 Group: ***- Inactive Clan Members Followers: 72 Topic Count: 149 Topics Per Day: 0.03 Content Count: 3472 Content Per Day: 0.67 Reputation: 1286 Achievement Points: 23224 Solved Content: 0 Days Won: 1 Joined: 12/23/09 Status: Offline Last Seen: November 16, 2021 Birthday: 10/01/1975 Share Posted October 17, 2020 (edited) So i have a project to build a special desk led lamp, but not with standard bulb. I need help from an electrician or some led wizard with what components i should get and im a complete noob with electric circuits and all that. the leds bar/strip i want to use have these specs : -14w -40V -350mA and already got a driver, but i think it is too powerfull for these leds : https://www.meanwell-web.com/en-gb/ac-dc-multi-stage-led-driver-constant-current-cc-lcm--40 my guess is that this one would be fine for like 3 of those leds, but too powerfull for just one, am i right ? in this case i wil use it later for another fixture. btw, i want to have a dimmer for this too, something like a simple knob. Edited October 17, 2020 by ChknFngr Link to comment Share on other sites More sharing options... Awards
Oster Posted October 19, 2020 Member ID: 27413 Group: **- Inactive Registered Users Followers: 2 Topic Count: 9 Topics Per Day: 0.00 Content Count: 191 Content Per Day: 0.10 Reputation: 77 Achievement Points: 1174 Solved Content: 0 Days Won: 0 Joined: 12/05/18 Status: Offline Last Seen: September 24, 2023 Birthday: 12/04/1997 Device: Windows Share Posted October 19, 2020 That should be fine as it is rated for .35mA driver, but I am not sure what your LED strips are so something like this LED dimmer knob might work but you will have to do some more research on this as I am not very experienced with currents and resistance measuring. https://store.waveformlighting.com/products/filmgrade-flicker-free-dimmer-for-led-strip?variant=5771695915037¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&gclid=CjwKCAjwz6_8BRBkEiwA3p02VQt7zPVlxUrQFmf38qq66y9eJZC5utOR_kpxhR5D1Vf5cDQso_ATRhoC80QQAvD_BwE ChknFngr and Bogleg 1 1 Link to comment Share on other sites More sharing options...
ChknFngr Posted October 19, 2020 Member ID: 922 Group: ***- Inactive Clan Members Followers: 72 Topic Count: 149 Topics Per Day: 0.03 Content Count: 3472 Content Per Day: 0.67 Reputation: 1286 Achievement Points: 23224 Solved Content: 0 Days Won: 1 Joined: 12/23/09 Status: Offline Last Seen: November 16, 2021 Birthday: 10/01/1975 Author Share Posted October 19, 2020 yea, the driver is rated for 350mA but at 100v. But as i understand it now, it should be fine as it is a constant current driver. the link for the dimmer you got up there seems really nice and it seems like something i want, but it not cheap at all lol anyway i think all i got will work fine. thank you for the help Oster ! Link to comment Share on other sites More sharing options... Awards
Bogleg Posted October 19, 2020 Member ID: 907 Group: *** Clan Members Followers: 96 Topic Count: 126 Topics Per Day: 0.02 Content Count: 2731 Content Per Day: 0.52 Reputation: 3927 Achievement Points: 26176 Solved Content: 0 Days Won: 13 Joined: 12/20/09 Status: Offline Last Seen: March 19 Birthday: 02/10/1969 Device: Windows Share Posted October 19, 2020 Is it 100V? Looks to me like it's 2-100V output. And as far as how many strips it could drive, I think it's two - max output is 40W (42W but assume some driver losses) and three of them adds up to 42W. I have built a few LED fixtures - all in series on big CC drivers. Link to comment Share on other sites More sharing options... Awards
ChknFngr Posted October 20, 2020 Member ID: 922 Group: ***- Inactive Clan Members Followers: 72 Topic Count: 149 Topics Per Day: 0.03 Content Count: 3472 Content Per Day: 0.67 Reputation: 1286 Achievement Points: 23224 Solved Content: 0 Days Won: 1 Joined: 12/23/09 Status: Offline Last Seen: November 16, 2021 Birthday: 10/01/1975 Author Share Posted October 20, 2020 (edited) well, i can select a few output setting on the driver : 350mA 2 ~ 100V 600mA 2 ~ 80V 500mA 2 ~ 67V 700mA 2 ~ 57V 900mA 2 ~ 45V 1050mA 2 ~ 40V So i will have to select 350mA, so it will give me 2 ~ 100V what im wondering is how to make it so that it wont go above 40V, coz i only wants one led strip and it is 37.5V i dont want 3 ledstrips as this will be like a desk lamp. The input is 240V here. Edited October 20, 2020 by ChknFngr Link to comment Share on other sites More sharing options... Awards
Bogleg Posted October 20, 2020 Member ID: 907 Group: *** Clan Members Followers: 96 Topic Count: 126 Topics Per Day: 0.02 Content Count: 2731 Content Per Day: 0.52 Reputation: 3927 Achievement Points: 26176 Solved Content: 0 Days Won: 13 Joined: 12/20/09 Status: Offline Last Seen: March 19 Birthday: 02/10/1969 Device: Windows Share Posted October 20, 2020 I would need to read the data sheet on it but it should automagically adjust to the correct forward voltage, I think. Drivers I use have fixed fV so I have to match them specifically. ChknFngr 1 Link to comment Share on other sites More sharing options... Awards
ChknFngr Posted October 20, 2020 Member ID: 922 Group: ***- Inactive Clan Members Followers: 72 Topic Count: 149 Topics Per Day: 0.03 Content Count: 3472 Content Per Day: 0.67 Reputation: 1286 Achievement Points: 23224 Solved Content: 0 Days Won: 1 Joined: 12/23/09 Status: Offline Last Seen: November 16, 2021 Birthday: 10/01/1975 Author Share Posted October 20, 2020 ok well this is what i taught after getting the msg from the company selling the driver. so it should work fine. thanks for the help bogleg Link to comment Share on other sites More sharing options... Awards
Recommended Posts