Timeline for Discrete LED Driver Topology
Current License: CC BY-SA 3.0
15 events
| when toggle format | what | by | license | comment | |
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| Oct 19, 2018 at 15:52 | comment | added | MicroservicesOnDDD | @Saad-I took the time to enter your schematic into LTSpice the best I could -- you left a lot out. I assume you actually have more than 4 LED's in series. Also, if you could fill in all of the discrete values you left out, the capacitors in particular. If you could also give L1 and L2 inductance, that would help, but I understand if you don't have an LRC meter. Also, it seems to be very inefficient, so could you check R1 through R4, as they seem to have rather high values. We can help you better if you give us better information. Thanks. | |
| Mar 13, 2017 at 20:08 | history | tweeted | twitter.com/StackElectronix/status/841380505761284098 | ||
| Jul 2, 2015 at 3:44 | answer | added | Autistic | timeline score: 1 | |
| Jul 1, 2015 at 18:53 | comment | added | Saad | @IgnacioVazquez-Abrams Yes, L2 charges up when switch is ON. When it turn's OFF, LEDs are supplied energy via D2. But how does the switch turn ON again? What determines that? | |
| Jul 1, 2015 at 18:14 | comment | added | Ignacio Vazquez-Abrams | And now it's a buck regulator. | |
| Jul 1, 2015 at 18:12 | history | edited | Saad | CC BY-SA 3.0 |
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| Jul 1, 2015 at 16:34 | comment | added | Saad | Updated the schematic. | |
| Jul 1, 2015 at 16:02 | history | edited | Saad | CC BY-SA 3.0 |
deleted 2 characters in body
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| Jul 1, 2015 at 15:52 | comment | added | Saad | Woops! Yes, it's supposed to be the other way around. | |
| Jul 1, 2015 at 15:50 | comment | added | WhatRoughBeast | You might want to check the polarity on D2. | |
| Jul 1, 2015 at 15:21 | comment | added | Saad | @IgnacioVazquez-Abrams It seems like the Joule Thief is meant for using batteries. But this circuit is run off the mains and there's no need to increase the supply voltage. | |
| Jul 1, 2015 at 14:30 | comment | added | Saad | Reading up on it now. | |
| Jul 1, 2015 at 14:30 | history | edited | Saad | CC BY-SA 3.0 |
added 96 characters in body
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| Jul 1, 2015 at 14:25 | comment | added | Ignacio Vazquez-Abrams | Do you understand how a Joule Thief works? | |
| Jul 1, 2015 at 14:22 | history | asked | Saad | CC BY-SA 3.0 |