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I would suggest buying a switching current limiter, you're paying that much pay a few more dollars (2$?! I found mine for around 2-3$) and mine didn't generate even the tiniest amount of heat while charging at 2A! (mine is 50F! charges my phone for 2 minutes :c)
oh, that's sad :cbut if I wanted to do something that is battery operated and don't want to waste energy or generate heat. what other options to I have? As far as I've found out my other option for current limiting is switching which I have a hard time understanding!
Awesome! Can I ask a unrelated Question?The Op-amp circuit you used in your charger, does it waste the unused current as heat like most other cheap limiters?the reason I'm asking this is because I need a current limited Constant voltage circuit (Charging a phone from a super capacitor) what can I do?
I don't understand. What's the difference between this and putting the potentiometer in place of the mosfet? Wouldn't the current go higher/lower if the led (power led for example) heated up?
Thanks a lot :) This sounds pretty good and reasonable for LEDs. I wonder why They sell the expensive controllers :? you can't change the voltage with them too. you can't control them with a mcu :S
Hah! Awesome xD but buying it is easier
If you have the money or if you Can use a 24inch phone you can make one :)
Don't resistors only limit current? And doesnt the - on the comparators change as battety voltage drops?Anyway to get more accurate readings to my arduino? I want to be able to tell percantage
Wouldn't it be annoying if you're in a cae and the sun keeps blocking it? A capacitor is not big enough and battery makes things complicated!aybe i could use 4 bulky ones :D in parallel
Doesnt the 3d printed part leak? I was thinking of doing thr same to my square bigger heatsink to turn it into a water block for my peltier!!
Does this eve cool the room for a single degree ?:DI currently use a bucket of ice, a hole in mid, fan to push air in in top ice in middlewater drops to the bottom. The air is 11 degrees but it's so small, Instead of a 80mm fan I might add a case fan but I'm too lazy to go buy a fan :D
I will take this to the paintball next time :) Just sit back in the cover and watch them scream!
I should make one in my room, but somehow it hsould now me, this way my brother won't get into my room again!
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