Quicky electronic question: just a problem with Amperes?
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No, the current rating on a power supply tells you how much current it is capable of supplying. A device or circuit only draws the amount of current it needs to operate regardless of how much the supply can provide. A supply doesn't force feed current into a device.
Under normal conditions the supply will only deliver the current required by the load. While a decent power supply will have overload protection to minimize the probability of fire or other damage, the 6A supply's setpoint is likely to be higher than the 1.25A supply (that should make sense). Under fault conditions your 6A supply is capable of delivering more than 4x's the current of the 1.25A supply before it automatically clears the fault. I would recommend that you not use the 6A supply unless absolutely necessary due to the safety concerns. If you do use the 6A supply, I would recommend some form of appropriately sized overload protection (like a fuse or thermal switch) between the output of the supply and the load.
That supply will do the job for you but as pointed out if the device in question suffers a short that causes a large current draw the device will surely be destroyed (or catch fire) long before the power supply's over current protection kicks in. As long as you're ok with such a risk go ahead and use it.
You could splice a fuse holder into the output side of the line, but if you aren't skilled at such work I'd suggest paying a professional to do it, or better yet find the correct 220V power supply for your device. That would be the safest option.
Oh yeah, you can also purchase an adapter that will step down your 220V to 110V and then you can use the one you have now. Americans traveling abroad often use such adapters so they can use their appliances while traveling.
That supply will do the job for you but as pointed out if the device in question suffers a short that causes a large current draw the device will surely be destroyed (or catch fire) long before the power supply's over current protection kicks in. As long as you're ok with such a risk go ahead and use it.
You could splice a fuse holder into the output side of the line, but if you aren't skilled at such work I'd suggest paying a professional to do it, or better yet find the correct 220V power supply for your device. That would be the safest option.
well the powersupply will stay on a wooden floor... So I do not want big fire lucky you helped me
so I got directly to the shopping center to try to find somethign adapted ... I hope I can find
Oh yeah, you can also purchase an adapter that will step down your 220V to 110V and then you can use the one you have now. Americans traveling abroad often use such adapters so they can use their appliances while traveling.
I saw one box like and it was pretty big. a big metal box, and I was fearing that it could burn out.
I d like to avoid anhy fire when i am not there.
Someone told me here that we have to multiply, the volts x amperes and both values of the powersupplies should match. But that I do not trust much ...
Ask whoever told you that if they think replacing a 100V, 1A power supply with a 1V, 100A power supply (or vice versa) makes much sense. If they say it does make sense, you know not to trust them!!!
and the guy told me that on the box of the powersupply 220v, it is writen 6amperes MAXIMUM http://www.mercateo.com/p/102-510511...SPS_2406.html; hence he said that it will not burn and is out of danger. He guaranted it, but you know he was 18-20 and of course they do not do electronics or too little, the salesmen.
I wasn't referring to the power supply burning, I meant what ever you are powering with the power supply. I'm old, one of my degrees is in electrical engineering, I've worked in nuclear power plants most of my adult life and when I wasn't working in a nuke plant, I was still working with electrical/electronic equipment. I work as a safety/reliability engineer. I guarantee that your laptop is more likely to catch fire if you use a grossly over sized power supply than one that's properly sized. If the 1.25A supply is correctly sized, then the 6A is grossly over sized. Sure, it will work, but as a safety engineer, I'm telling you there's a risk.
I wasn't referring to the power supply burning, I meant what ever you are powering with the power supply. I'm old, one of my degrees is in electrical engineering, I've worked in nuclear power plants most of my adult life and when I wasn't working in a nuke plant, I was still working with electrical/electronic equipment. I work as a safety/reliability engineer. I guarantee that your laptop is more likely to catch fire if you use a grossly over sized power supply than one that's properly sized. If the 1.25A supply is correctly sized, then the 6A is grossly over sized. Sure, it will work, but as a safety engineer, I'm telling you there's a risk.
You're the One !
I tried the powersupply 6A, and it sounds like the charging of my roomba 560 is not working.
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