With losses factored in could you power a 5.0v 2.0amp current with a basic RC motor?
15 replies, posted
Bonus if it runs with losses factored in for a muffler and or intake mods or something to make it quieter or if you could tell me what type of motor i need for the quietest operation
Camping generator (I made a thread before like this yeah detailing something running off AA batteries and it worked aside from having to fashion a heatsink out of aluminum foil and a portable fan)
thanks
What the?
Was asking if a 5.0v-2A current could be achieved with a nitromethane motor hooked up to a small generator
[editline]18th October 2010[/editline]
Preferably around 12v-3A if running a 7805 regulator to make current more stable
[editline]18th October 2010[/editline]
By losses I meant drivechain losses to the generator instead of theoretical capacity
Why don't you just attach the bulb to the generator?
I don't know what dragon-in-bar is, so that's probably the answer.
Powering voltage-sensitive equipment (Cellphone) so a constant 5V current is needed so I'd hook it up to a 7805 regulator which can take anything from like 10-15v ish and make it 5v from my experience
if the motor generates enough power to turn a generator over and make that kind of power (preferably with a muffler / silencer installed), that is, which is why I'm asking if it's possible for a normal RC nitromethane plane motor or something can generate enough power to do that
Throttle under load will probably just be regulated with a lever and a voltmeter for simplicity
no
stupidest shit i've seen ever
[QUOTE=Ehm;25491780]no
stupidest shit i've seen ever[/QUOTE]
Why, all you'd need to recharge devices using this setup on the go in areas with no power would be a couple of fuel bottles full of nitromethane which has a shelf life of a couple years
I wouldn't be considering building it if I wasn't going to be putting myself in that kind of situation too (Occasionally take week-long or so backpacking / kayaking trips on break so)
[QUOTE=Kai-ryuu;25491872]Why, all you'd need to recharge devices using this setup on the go in areas with no power would be a couple of fuel bottles full of nitromethane which has a shelf life of a couple years
I wouldn't be considering building it if I wasn't going to be putting myself in that kind of situation too (Occasionally take week-long or so backpacking / kayaking trips on break so)[/QUOTE]
two amps?
even if "SOMEHOW" you got a generator like that, it would cost a lot. [b] a lot [/b]
[QUOTE=Ehm;25491953]two amps?[/QUOTE]
I'm not too knowledgeable on the power of small nitromethane motors so that's why I'm asking
I've made a similar device powered off a shitton of used batteries before so I'm simply asking if those small RC nitromethane motors have enough power to run that much
One of my electronics has an amp draw of around 1.5 amps at load and that was fine running off of around ten used AA batteries as long as the 7805 was kept cool with a fan so with a multi-charging setup I'd expect around a 2 amp draw with another just allocated to the fan cooling the 7805 although that's probably way more than I'll ever need to power the fan
so I said 3A just to be extra sure everything could be powered
Yes I'll be using a properly large (relative) heatsink on the 7805 this time instead of fashioning one out of tinfoil
[QUOTE=Kai-ryuu;25492083]I'm not too knowledgeable on the power of small nitromethane motors so that's why I'm asking
I've made a similar device powered off a shitton of used batteries before so I'm simply asking if those small RC nitromethane motors have enough power to run that much
One of my electronics has an amp draw of around 1.5 amps at load and that was fine running off of around ten used AA batteries as long as the 7805 was kept cool with a fan[/QUOTE]
the batteries could have had combined power using a special series of connections, i doubt that a small nitromethane motor would have enough power for 2 amps
that is unless you had a pricey motor which also uses magnets or other generating techniques
[QUOTE=Ehm;25492146]the batteries could have had combined power using a special series of connections, i doubt that a small nitromethane motor would have enough power for 2 amps[/QUOTE]
Okay, thanks
The AA batteries were simply aligned in series though, and my PSP's power supply has a rating of 2 amps while the PSP itself draws around 1.5 at full load
[editline]f[/editline]
So how powerful a motor would you need to get around 3 amps of current at 12 volts? The 2hp briggs I have around do the trick - even though I'd never do that?
[QUOTE=Kai-ryuu;25492203]Okay, thanks
The AA batteries were simply aligned in series though, and my PSP's power supply has a rating of 2 amps while the PSP itself draws around 1.5 at full load
[editline]f[/editline]
So how powerful a motor would you need to get around 3 amps of current at 12 volts?[/QUOTE]
not exactly sure but it would have to be bigger than small thats for sure
[QUOTE=Ehm;25492292]not exactly sure but it would have to be bigger than small thats for sure[/QUOTE]
Thank you
[QUOTE=Kai-ryuu;25492303]Thank you[/QUOTE]
no problem im studying electrical engineering
Just pick up a small generator at Harbor Freight and run like a 60 foot extension cord from it so it isn't that loud.
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