/diy/ - Do It Yourself

>>1593837
>If you don't have them yet, why not just buy a DC LED?
I have, but I will be getting similar bulb for LED driver, so why not select proper color.
>Also 5000K.
Absolutely agree. This is exactly what I have.
>Is replacing your bulb with a 12V COB not an option? They can be pretty cheap, sub $5 range.
It might be an option, but aliexpress is slow, and local shops have insane prices.
>Depending on your LED bulb's circuit, HVDC may or may not work. If it's a capacitive dropper, it won't take kindly to having DC across it at all, though potentially you could just feed it higher frequency 36V square waves until it powers the LEDs with a decent brightness. If it's a switcher, you're basically feeding a buck converter with a boost converter, so removing that extra step and just using a constant-current converter (linear or switching, depending on the voltage difference) would be preferable, but not required.
It is switch mode non insulated DC-DC, and I tried it, it worked at 38V. IC will work at any voltage above 5,5V according to datasheet.
>To deconstruct the LEDs inside the bulb will likely be fairly destructive
On cheap bulbs you can remove glass really easily. Getting power supply out is tricky though.
>(and if I'm reading correctly that you have 16 individual ~3V LEDs that you are able to fuck about with) then wiring them as two strings of 8 LEDs, you'll need to drop up to 12V in your current regulator.
Pic related
>So the question follows, what are you willing to buy, and what do you already have, both in terms of LEDs and buck converters?
I have a bulb, and I would need another DC-DC from similar bulb, since there is not enough voltage to drive more than 3 LEDs in series.