I wanna contribute my views in respond to some of the unfair comments: 1. The project is excellent in demonstrating the characteristics of super capacitors and basic calculations involved. 2. Super capacitors can sustain far more charging/discharging cycles than lithium batteries and would unlikely require replacement after putting aside for prolonged period of time. 3. It takes you a few minutes to charge up the capacitor whereas Lithium batteries cannot promise you anything for a few minutes charging. Immagine if you want to check out your backyard at a stormy night and found that batteries in your long idled torch have fully drained or died. Simply plug in the supercapacitor torch for a few minutes and it's sufficient to finish your inspection.
Thanks for a very good explanation of the concept of using capacitors to replace batteries. Question: what stops the capacitors from dumping all the charge through the circuit and burning the LEDs? Thanks
Um no, you still need power to charge it up, and it will be a pain to carry around charged capacitors with you and change them out, vs with a battery, that I can do without any light. Watch the whole video, he only shows it with the USB cable attached to it and turns it on!
Great idea. Negative point. The super capacitors where I live costs 15 times what a Lithium Ion cell costs. Thus putting a Lithium Ion socket in the battery compartment, and removing the cell and charging it, is very much cheaper. And that is only one capacitor. Two capacitors would cost 30 times. That is with the battery cases, 22 flashlights.
The problem of using super caps is that these caps like regular ones have linear voltage drop and you can only use the voltage above the LED forward voltage and you also only get maximum light at the very first seconds and it will gradually drop until you get no more light so the useful light is maybe 25% of the actual charge plus they won´t light as long as batteris by far. but I made a super cap Dynamo light myself and you only have to wind it for a few seconds to get a minute of light out of it so it is a nice thing to have in case the apocalypse happens
Why waste batteries ( ? ) ... most small equipment using 2 or 3 AA cells can be powered by discarded vape batteries ... these are thrown away ( in THOUSANDS ! ) ... not only can they be recharged ( 4.2 Volts MAX ) ... but they are FREE ! ... WHY waste time and effort ( and cash ) with super capacitors .. ( and .. they do NOT leak like alkaline cells ) . DAVE™🛑
@@quietwon8992 Aha ! ... you need a ( female proof ) hiding place😝..... you might store them at your workplace , where she is not allowed , or your neighbour's shed ( in an empty plastic paint pot ) but ensure they cannot short out as this WILL burn the shed down ( tried - n - tested ) .... DAVE™🛑
@@bobo888bobo Probably not ... but , just walking around any town ( while shopping ? ) you will find one , or several on the sidewalk or in the bushes😝 you WILL need a soldering iron to disconnect and reconnect these handy little cells ( tried - n - tested ) .... DAVE™🛑
What about overcharging? Is it going to auto stop? Dont we have to install something to cut off charging when it reaches its capacity? Or will it know to stop charging when full? Sometimes we plug things in & forget. Will it get hot then burnout if left on charge over a minute? I know how dangerous lithium are known for overcharging then combust all the stored energy into flames. Only warning is the smell of spray paint before it happens. This happens when charge control system fails or doesnt break charging circuits when full. Just asking ,because it is very important.
Capacitors are not made with lithium, so you wouldn’t have that problem. Also the diode limits the voltage to the cap, when the cap is full the voltage will Mach the charge voltage, then there will be a balance of the 2 potentials and the charging will stop and just kinda sit there till disconnecting the charger..
Please could you prepare a lecture (tutorial) about IC (integarated circuit) and how to know the type,components and how which size capacitor,transister,diode and other electronic component that we needed to contruct our own project pcb.A-Z
To give you an idea to make math simple a 5 volt, 2 farad capacitor has around 25 joules of energy available, to give you comparison just 1 AAA alkaline battery has around 5000 joules of energy available and this flashlight takes 2 batteries so that would be closer to 10,000 joules available. I honestly don't see the point in using the super capacitor as a battery in this particular application.
20 min? I'm not an electronic expert, but the math seems wrong. If one cap gives one LED 12.5 min of power, 2 caps should give one LED 25 min of power. But, the flash light has three LEDs. Wouldn't the usable time be a little over 8 min? Even so, a battery life of only 20 min is very low. Maybe add more caps, but maybe just get NiMH batteries, instead. It is less voltage, but it also won't drive the LEDs as hard.
So you have made equipment, which needs to be recharged every twenty minutes... What a waste of time and resources... For academic knowledge it's ok, but I don't think practically it will be that much trustworthy....
At the price of this one Super capacitor you buy a simple 500mah battery it will last 250 times of this 1.5f capacitor. Such a useless thing 😪 to use here .
I wanna contribute my views in respond to some of the unfair comments:
1. The project is excellent in demonstrating the characteristics of super capacitors and basic calculations involved.
2. Super capacitors can sustain far more charging/discharging cycles than lithium batteries and would unlikely require replacement after putting aside for prolonged period of time.
3. It takes you a few minutes to charge up the capacitor whereas Lithium batteries cannot promise you anything for a few minutes charging.
Immagine if you want to check out your backyard at a stormy night and found that batteries in your long idled torch have fully drained or died. Simply plug in the supercapacitor torch for a few minutes and it's sufficient to finish your inspection.
Thanks for a very good explanation of the concept of using capacitors to replace batteries. Question: what stops the capacitors from dumping all the charge through the circuit and burning the LEDs? Thanks
Thanks for your knowledge sharing
The idea has many practical use specially in disaster areas
Um no, you still need power to charge it up, and it will be a pain to carry around charged capacitors with you and change them out, vs with a battery, that I can do without any light.
Watch the whole video, he only shows it with the USB cable attached to it and turns it on!
Great idea. Negative point. The super capacitors where I live costs 15 times what a Lithium Ion cell costs. Thus putting a Lithium Ion socket in the battery compartment, and removing the cell and charging it, is very much cheaper. And that is only one capacitor. Two capacitors would cost 30 times. That is with the battery cases, 22 flashlights.
Except if you got some for free! ;)
When I learned electronics in the Navy a one farad capacitor was as big as a house.
The problem of using super caps is that these caps like regular ones have linear voltage drop and you can only use the voltage above the LED forward voltage and you also only get maximum light at the very first seconds and it will gradually drop until you get no more light so the useful light is maybe 25% of the actual charge plus they won´t light as long as batteris by far. but I made a super cap Dynamo light myself and you only have to wind it for a few seconds to get a minute of light out of it so it is a nice thing to have in case the apocalypse happens
Why waste batteries ( ? ) ... most small equipment using 2 or 3 AA cells can be powered by discarded vape batteries ... these are thrown away ( in THOUSANDS ! ) ... not only can they be recharged ( 4.2 Volts MAX ) ... but they are FREE ! ... WHY waste time and effort ( and cash ) with super capacitors .. ( and .. they do NOT leak like alkaline cells ) . DAVE™🛑
Yes ive been saving them but when my girlfriend finds my stash she discards them. Very true, what a waste of precious minerals & pollution.
@@quietwon8992 Aha ! ... you need a ( female proof ) hiding place😝..... you might store them at your workplace , where she is not allowed , or your neighbour's shed ( in an empty plastic paint pot ) but ensure they cannot short out as this WILL burn the shed down ( tried - n - tested ) .... DAVE™🛑
@@quietwon8992 that comment saddens me. I feel you.
Do vape stores sell used ones cheap?
@@bobo888bobo Probably not ... but , just walking around any town ( while shopping ? ) you will find one , or several on the sidewalk or in the bushes😝 you WILL need a soldering iron to disconnect and reconnect these handy little cells ( tried - n - tested ) .... DAVE™🛑
What about overcharging? Is it going to auto stop? Dont we have to install something to cut off charging when it reaches its capacity? Or will it know to stop charging when full? Sometimes we plug things in & forget. Will it get hot then burnout if left on charge over a minute? I know how dangerous lithium are known for overcharging then combust all the stored energy into flames. Only warning is the smell of spray paint before it happens. This happens when charge control system fails or doesnt break charging circuits when full. Just asking ,because it is very important.
Capacitors are not made with lithium, so you wouldn’t have that problem. Also the diode limits the voltage to the cap, when the cap is full the voltage will Mach the charge voltage, then there will be a balance of the 2 potentials and the charging will stop and just kinda sit there till disconnecting the charger..
USB Charger voltage is Under the 5.5v so no problem for Over charging.
Please could you prepare a lecture (tutorial) about IC (integarated circuit) and how to know the type,components and how which size capacitor,transister,diode and other electronic component that we needed to contruct our own project pcb.A-Z
You can find a lot of videos on that
How does it compare with battery usage ?
To give you an idea to make math simple a 5 volt, 2 farad capacitor has around 25 joules of energy available, to give you comparison just 1 AAA alkaline battery has around 5000 joules of energy available and this flashlight takes 2 batteries so that would be closer to 10,000 joules available. I honestly don't see the point in using the super capacitor as a battery in this particular application.
In TH-cam videos mostly this type of multimeter is used for this project but other multimeters are not working properly for this
Replace the AAA batteries with one 18650 lithium battery makes more sense then this.
Buy a new bright led torch with usb charging,
better and cheaper ;)
20 min? I'm not an electronic expert, but the math seems wrong. If one cap gives one LED 12.5 min of power, 2 caps should give one LED 25 min of power. But, the flash light has three LEDs. Wouldn't the usable time be a little over 8 min? Even so, a battery life of only 20 min is very low. Maybe add more caps, but maybe just get NiMH batteries, instead. It is less voltage, but it also won't drive the LEDs as hard.
The TH-cam algorithm is doing this because of me blahahaha
TH-cam algorithm giving this video attention. 6 years ago it was uploaded 😮
6 days note **year..😂
6 days not **year..😂
Batteries can last hours. Caps - minutes.
But in just 3 days the cell discharge automatically. not successful project
Do yourself a favor and speed it up 25 percent. It's sooooo sloooowwww
Use the playback controls to increase the speed
So you have made equipment, which needs to be recharged every twenty minutes... What a waste of time and resources... For academic knowledge it's ok, but I don't think practically it will be that much trustworthy....
not practical at all... it cannot hold the charge for more than a few seconds of operation... it cannot replace batteries...
Its age old clickbait basically.
"Use a capacitor instead of a battery!"
AI narrated crap.
At the price of this one Super capacitor you buy a simple 500mah battery it will last 250 times of this 1.5f capacitor. Such a useless thing 😪 to use here .
no cut.