How viable is a 100W LED flashlight project powered by supercapacitors. What about the declining capacitor voltage (which will result in a growing capacitor current)? What about total energy availability if only half the capacitor's voltage range can be used?
By Julian
Youtuber, shed dweller, solar charge controller aficionado
Did you ever finished a project? you were going to run amplifier!
Hay
Thank you Julian!
Now Iโm starting to understand this with supercaps.
And perhaps even a viable idea how to build a combined super capacitor and battery (of mixed quality) BMS.
Hoping for more about the negative charge protection.
Did you ever finish a project?
Nice
How about using slightly larger supercapacitors, say 700f to 1000F, and a 30W to 50W LED, for about a SIX minute run-time?
i wonder, would you be able to use the 120F or the 500F super capacitors to start a car? the starter takes approx. 85A, would it be be possible able to supply that much current for an engine start?
It might be in my mind, but the placement of the LED's might fit exactly in front of the eyes..
At 15Ainput, I calculate 6.7V input to equal 100W (15A)(6.7V)=100W…Will this big buck converter (I didn't see the part no.) work down to, say, 7V. (With appropriate safeguard you mentioned at the very end). I am thinking about building this project with this feature of about a supercap voltage drop of about 20v to 7.5v. Also, those 50W LED's are pretty bright–so this combination would give an even more impressive run-time…~ 2min 20sec. Using a nice bright 30W LED gives nearly FOUR minutes. NOW, use 1000F supercaps…….what's that…a bit over SIX minutes?
Julian….I am having trouble locating "THAT" thing shown at the very end of this video–HELP!!