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A power supply is rated at 800 mAmps. Will it work on a device rated at 1 Amp?
Wiki User
∙ 15y ago
Probably. But the real question is this one. Should I use it? It's not a good idea. The device needs 1 amp. You are hitting it with a supply rated at .8 amps. This will cause the voltage to "sag" a bit, and it will overload the supply a bit. As stated, the unit being driven will probably work. It probably doesn't draw a full amp all the time (unless it's a little TV or the like, which pulls a fairly steady amount of power). Hit the thrift stores or the second hand shops. There are a lot of little power supplies out there. (They're usually called adapters.) You should be able to find what you need. Note that the ends almost certainly won't be the right size or "flavor" your device needs. Go to an electronics shop and spend a couple of bucks and get the right one and solder it on yourself. Be sure make your connection with the correct polarity. This isn't really that hard. If you need help, any electronic or electrical shop can assist, but you'll incur some extra expense. It's not that hard to do it yourself, and it really is a do-it-yourselfer's project. Oh, and you have WikiAnswers for more help.
Wiki User
∙ 15y ago
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Can you use a ac to dc power supply rated 12 V at 1.0 A for a device that needs 7.5 V at 1.4 A?
You can't. Buy the correct power supply.
Can you use a 12 volts 3 amp power supply on a 12 volt 500 milliamp device?
Your power supply can supply 1 A, but your device requires 2 A. So the power supply will be overloaded. So the simple answer is no.
Can you use a power supply with more amps and not fry the unit?
you will need to be allot more specific on what you are trying to do here. what is the difference in amps. what is the device Generally speaking it is good practice to only use the power supply that the device is rated for. the biggest issue you will have is this Power = voltage * current (simple version) if the power supply you had was 12v at 1 amps then you ca supply 12Watts of power if the power supply you had was 12v at 10 amps then you can supply 120Watts of power Just because you can supply 10 amps, and all you need is one, means your power supply is bigger than it needs to be. The device will draw what it is intended to draw. Just make sure the voltage matches.
Can you use a 12 volt 5 amp power supply on a 12 volt 2 amp device?
Absolutely.As long as the converter (or any power source) is rated at the same voltage, with more current than the device needs.Sometimes, a device may have a higher initial current surge than it's operating current, keep this in mind. Some converters do a good job handling momentary surge, some don't.
Power supply units are rated in?
Power supply units are rated based on their output and efficiency. When more equipment is connected, a higher output power supply is needed.
Can a device requiring 12 volts and 3 amps run with an adapter providing 12 volts and 2 amps?
No. Your power supply must be able to supply rated voltage (12 volts) and rated current (3 amps).
Will a 15DC 1000mA power supply work on a device needing 15DC 1500mA power supply?
Your question is confusing, but if you are asking whether you can use a 9V/250 mA adapter to supply a load device rated at 5 V/1000 mA, then the rule is quite straightforward. The adapter's rated output voltage must match that of the intended load, but its rated current must exceed that of the load. So in your example, you cannot use the adapter with the intended load.
What will be the effects of using a 12V 1.5A power source to a 15V 1A device?
Most likely, yes. If your device requires 12 volt and draws 1 Amp of current, a 12 volt power supply will give the required voltage and will be able to supply the 1 amp of current it needs to run. A power supply that supplies a little more voltage might also work but depending on the device may cause the device to fail sooner. Much more than 12 volts will most likely destroy the device and result in a burning smell and smoke. A power supply for less than 12 volts may fail to power the device or may make it run slower. This would be like using a battery in a device and as the battery gets weaker, it supplies less voltage and the device slows down or a flashlight get dimmer till it stops working. A 1.5 amp power source is capable of delivering 1.5 amp of current to the device. If the device need less (only 1 amp), it still gets the amount it needs to function. If the power supply was rated at 10 A or 100 A, the device will still only use 1 A to function. If the power supply were rated at less than 1 amp. The device might not get enough current to run.
Can you use a 9v 1500ma on 9v 500ma device?
Yes. (For any pairing of power supply and device, as long as the voltages are a match (in your case: 9v), and the output (in amps or milliamps (A or mA) of the power supply IS EQUAL TO OR GREATER THAN the current required by the device (in your case 1300mA or higher) then you will be fine. Yes it is suitable: The OUTPUT VOLTAGE (5v, 9v, 12v, etc) of a power supply MUST BE EQUIVALENT to the required voltage of the device to which it is to be connected, whereas the output CURRENT (500mA, 1A, 1500mA, 2A... etc) offered by the power supply MUST BE AT LEAST EQUAL TO OR GREATER THAN the current required by the device to which it is to be connected. (in your case, for example, as long as the power supply is rated at 9v, you could use one that has a rating of 1300mA, 1400mA, 1500mA, 1A...and so-on, without any damage to either device)
Can I substitute a 12V DC 700 ma power supply or wall wart with for a 12V DC 500 ma rated supply?
Yes you can but for devices use 12 v and 500 ma( 0.5 a) <<>> No, the output of the 500 mA power supply will be too small for a device that requires 700 mA to operate. It can be done the other way around though, a 700 mA power supply will operate a device that only requires 500 mA with 200 mA to spare.
Can you use 1 amp power supply for 1.5 amp device?
The simple answer is, No. But I'll give you the long answer, too. The power rating of most devices is the maximum power used under unusual circumstances. Most devices, unless it's something like a light bulb which is either on or off, don't use their max power 99% of the time. If you protect the circuit with a 1.0 amp fuse you protect your power supply and device and you can safely see if it works.
Can you use a charger on a device with a different milliwattage?
generally yes. if the voltage is the same. the current however may effect the device if the current is greater then the main device's listed current. For example if you try to use a 20v 3.42A power supply instead an individual laptops power supply rated at a 19v 2.5A the life of the device will be shorted by a lot. as they have sensitive circuits. I have fried a motherboard's power distribution sector by doing this. but i had a backup laptop of the same make/model so it didn't bother me. it lasted about 6 months after i initially/deliberately used the other power supply. if its a small difference the life span wont be drastically effected. if the power supply has too little current it will need to work harder shortening the power supplies life span. using the correct power supply will save a lot of time and hassle.
