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You might be able to, but you probably *shouldn't*. 1 amp is equal to 1000 mA. The device requiring 1.0A is listing the maximum amount of amps that the device will need from it's power supply. If it only delivers 300 mA, there's a chance it may still run, but it could exceed the current needed to run the device (which could shorten it's life, or burn it out immediately in the worst case scenario).
I currently am using a 12v 500mA supply with a light-based device requiring 12v 1A, and while it does work, the source device (an adapter) gets extremely hot and could be a fire hazard.
Stick with the recommended matching specs, or if you can't match, even 12V2.0A would be safer and preferred.
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∙ 12y ago
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∙ 13y agoNo, you can't. Supplying a higher potential than specified almost always results in damage to the component. If the component has some sort of crowbar circuit to prevent over-voltages, the component may possibly not be damaged, but it won't get any power and the adapter would be short circuited, which might destroy it. Furthermore, if the original adapter is rated at 1A (1000mA), 200mA (0.2A)most likely just wouldn't supply enough juice, even if the replacement adapter were rated at 6VDC.
Wiki User
∙ 13y agoWhile the voltage supply matches the requirement, a 500 mA supply is designed to safely supply no more than 500 mA. This would include the design for dissipating heat, as well as ratings of the internal components. So either some components in the supply would immediately blow due to excess current, or the device would supply for awhile until it got too hot and poses a fire hazard or components fail. It might even have a fuse or breaker designed to blow or trip to protect the device from too much current. You need to get a supply that is designed for the intended load.
Wiki User
∙ 9y agoNo. Way too much amperage.
Wiki User
∙ 11y agoNO
Wiki User
∙ 6y agoYes
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Can a 12V 2A adapter be used for a 12V 500mA device?
The adapter's voltage must match that of the device, and its current-rating must exceed that of the device. So the answer is yes.
Can you use a 12v dc 1a power supply on device that requires 12v dc 3200ma?
No, 3200 ma = 3.2 amps
Can you use 12v 600ma instead of 12v 500ma?
Using a 12v 600ma source is allowing 12 volts and 600 amps of power. If the device requires a 12v 500ma source, the larger source is acceptable. Please note that it will only be drawing on 500ma of the available 600ma.
Say the power consumption of my 12v devise is 80 mA or less and the instructions say use a 12v 300 mA power supply and I use a 12v 800mA OK or not?
Generally, yes. If your devise will only draw 80mA, it will do it whether it is connected to a supply that is capable of supplying 300mA or 800mA. The amperage rating on the power supply is the highest current that it is rated for. It will easily and safely provide less current. The load that is connected to the power supply will determine the actual amount of current.
Can 12V 1A adapter be used for 12V 2A device?
no, it may damage the appliance.1Can_12V_2A_adapter_be_used_for_12V_1A_device, 2a adapter cannot be used for 12v, 1a device if the so mentioned parameters are input parameters of the device.Yes, a 12 volt 2 amp adapter has more that enough capacity to operate a 12 volt 1 amp device. In fact the adapter can operate devices up to a limit of 12 volts 2 amps. A device larger than 2 amps connected will tend to heat the adapter up and eventually cause it to fail.
What is the difference between a 9v 300mA Adapter and a 12v 300mA Adapter?
difference is 2.7 amperes in numbers will be 12 volts 3 amps and the other will be 12 volts .3 amps
Will a universal ac adapter that says it is 1.5-12v up to 300ma be used to charge a portable DVD player that uses a 9 v1.5 a battery?
no
Can a 12v battery be used in a 12v device?
the answer is yes as long as the device works on dc current and not ac current if you tell me what the device is i might be able to help further
If you need a 12v 3.0a ac adapter can i use a 12v 300ma?
No. Or at least not for long. 300 mA is 0.3 A, 1/10 of the 3 A you're asking for. It'll either overhat and break, or trip an internal fuse and shut down.
Can a 12V 2A adapter be used for a 12V 500mA device?
The adapter's voltage must match that of the device, and its current-rating must exceed that of the device. So the answer is yes.
What happens if 12V-1200mA supply is given to 12V-700mA device?
It will work fine as long as the supply voltage matches the device. They both must be 12V, and both usually must be the same type-- either AC or DC. The supply current must be at least as much as the device requires.
Can a 12v 550ma device be run by a 12v 210ma supply?
No, the supplies output is too small. To run a 550mA device a supply source of 600mA and larger would be needed.
What if you use a 12V 1.5mA power adapter in place of 12V 1.2 mA one?
It will take longer to charge the device
Can I use 12V 1A adapter for a 12V 0.16A device?
I wouldn't recommend it ! If the device needs to draw more current than is available - the adapter could overheat, posing a fire risk.
Can you replace 12v 1a adaptor used on device of 12v 700ma?
No, the new adapter will not be able to safely supply enough current.
Can you use a 12v dc 1a power supply on device that requires 12v dc 3200ma?
No, 3200 ma = 3.2 amps
Will a 12v car battery safely work for 9V 3.5A device?
No.
