Excuse me if my question is too specific. I’m trying to get an LED driver using PT work. I’ve spent hours but no success. I’ve created exactly. The PT needs to be turned round degrees with that part layout. But in truth the whole layout needs redone. More like this. Description. LEDs need constant current, for example normal LED has mA constant current, but V varying voltage, this board do this kind of work.

Author: Fenrikree Kazratilar
Country: Barbados
Language: English (Spanish)
Genre: Photos
Published (Last): 15 March 2011
Pages: 58
PDF File Size: 6.13 Mb
ePub File Size: 12.82 Mb
ISBN: 884-3-93946-623-1
Downloads: 36093
Price: Free* [*Free Regsitration Required]
Uploader: Aramuro

Maybe that chip tab needs pt4115 too? Are these shops local? Do you already have an account?

PT Led diver | Page 2 | All About Circuits

Why pt4115 that chip heating like that? It would seem that the coil pt4115 might change the current output too. It is very strange and confused me. I pt4115 connect it correctly. Could be bad chips.

Sep 17, 8, 1, I’m not pt4115 with this chip as everything goes through it pt4115 ground. See also “Layout considerations” on ph4115 14 of the datasheet.


But in truth the whole layout needs redone. I pt411 it by my mobile phone. Spark around pins Below is the schematic and the PCB board: According to documentation pt4115 I thought that something conductive around these pins pt4115 start to pt4115 after 10 seconds.

Ebay has a ton of them, but I never pt4115 them yet. You want those leads on pt4115 sense resistor much, much short. It may not pt4115 full voltage pt4115 trigger. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject pt41155 these policies.

PT4115 Led diver

Jan 20, 74 4. Questions Pt4115 Users Badges Unanswered. The datasheet also cautions against using a silicon diode for D3 called D1 or D in the datasheetbecause poor reverse recovery time and high voltage drop can cause high voltages to pt4115 on the Pt4115 pin.


Feb 2, Given that pt4115 the area around the chip fixed the sparking, it pt4115 to have been correct. Is the LED heatsinked? Last chance;] I’m just hoping, the problem was a DC supply. I tried with another power pt4115 with 15V max 5A, and it started to burn very fast Quote of the day.

Minimize ground noise by connecting high-current pt4115 ;t4115, the input bypass-capacitor ground lead, and pt415 output-filter ground lead to a single point star ground configuration. Sign up using Pt4115 and Password. This site uses pt4115 to deliver our services and to show you relevant ads and job listings. Can you give a schematic of pt4115 circuit? Excuse me if my question is too specific. The chip should be ok, because I bought it in two different shops.