Well, I have a project where I use a car glass motor (12 volts) on a computer's source to prevent burning it, but I would like to know if a cell's source cable hold out the same voltage, if not burn the cell's source or the engine.
So I could use something more practical, mobile, etc.
If anyone can tell me about it, thank you.
Sorry if my English is not so good.
Hi.
Your question is a bit hard to understand, because of the translation from Portuguese i guess.
Are you asking about the cable, or about the power supply ?
What i think i understood, is that you want to control a motor built for some car's power windows, and are wondering if you can use a phone charger instead of a PC power supply.
And if not, which of them will fail.
The motor is 12 volts, quite standard in cars.
The PC power supply will have no problem supplying 20 amperes @ 12 volts (that's 240 Watts).
It should handle that motor without too much trouble.
A phone charger usually is rated 5 volts and something like 0.5 or 1 Amperes (5 Watts maximum).
If you happen to have a real good quality phone charger (meaning they usually aren't that good), it can withstand short circuits for some time.
It would just stop supplying.
If you have a real bad charger, it will try to keep supplying whatever it can supply.
It will fail, burning components (you do not want that).
In the unlikely case the supply is just bad designed and could handle a lot more than 1 Ampere at 5 volts, the cable might be the weak link.
A charger cable is quite thin.
It cannot handle large currents (Amperes), but if such currents are available, it will try to convey as much electrons as possible.
The result will be self destruction: the cable will heat up quite fast.
The isolation might melt and burn off of the copper wire.
Of course these are all worst case scenarios.
You should really study voltage, current and how they correlate (this might keep you busy for the rest of your life).
MAS3:
Hi.Your question is a bit hard to understand, because of the translation from Portuguese i guess.
Are you asking about the cable, or about the power supply ?What i think i understood, is that you want to control a motor built for some car's power windows, and are wondering if you can use a phone charger instead of a PC power supply.
And if not, which of them will fail.The motor is 12 volts, quite standard in cars.
The PC power supply will have no problem supplying 20 amperes @ 12 volts (that's 240 Watts).
It should handle that motor without too much trouble.A phone charger usually is rated 5 volts and something like 0.5 or 1 Amperes (5 Watts maximum).
If you happen to have a real good quality phone charger (meaning they usually aren't that good), it can withstand short circuits for some time.
It would just stop supplying.
If you have a real bad charger, it will try to keep supplying whatever it can supply.
It will fail, burning components (you do not want that).
In the unlikely case the supply is just bad designed and could handle a lot more than 1 Ampere at 5 volts, the cable might be the weak link.
A charger cable is quite thin.
It cannot handle large currents (Amperes), but if such currents are available, it will try to convey as much electrons as possible.
The result will be self destruction: the cable will heat up quite fast.
The isolation might melt and burn off of the copper wire.Of course these are all worst case scenarios.
You should really study voltage, current and how they correlate (this might keep you busy for the rest of your life).
First, sorry for my English and thx for help.
So if I use a printer's cable, which is 12 volts, will it work?
Hi.
No need to keep apologising for your English language skills, you are trying (and so am i), you'll be fine.
12 volts doesn't tell all there is to know about this, reread my last sentence in my reply above.
It's unlikely that the printer power supply will be able to supply the current (Amperes) your motor needs.
But it is far more likely that it might help you to get that motor running (without any load).
So you nee the right voltage, but more important fore this kind of loads, you need a supply that is able to supply enough current, and preferably a little extra current.
Current is drawn, meaning that if your load doesn't need more, it will not "consume" more current.
So, computer's source is the best... but, do you know what is the best substitute for computer's source? Or computer's source are the best? lol
Find the specifications of that motor.
12 volts is one you already know (you will have no problem connecting something like 15 volts in this case, but it's far more likely to find a 12 volts supply).
Next try to find the "Stall current".
After that, go and find a power supply that can handle 12 volts at a higher current than the "stall current" you just found.
I'm 100 % sure you can find a more suiting supply (that doesn't also supply 3.3, 5 and minus 12 volts).
I'm not so sure it will be cheaper to buy (might be cheaper if you also take a look at the electricity bills and in long term).