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No. The voltage rating is the same, but the lower current rating on the 400ma power supply might cause the voltage to drop way below 12 volts, and on some devices a lower voltage than it is rated for will cause it damage.

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12y ago

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Can you use a 300ma power supply in place of a 400ma supply?

Yes, you can use a 300mA power supply in place of a 400mA supply, but it may not provide enough current for the device to operate properly. If the device requires 400mA and only receives 300mA, it may underperform, malfunction, or even be damaged due to insufficient power. It's important to ensure that the power supply meets or exceeds the current requirements of the device for safe and effective operation.


Can you use a 9V 600mA adapter on a 9V 400ma scanner?

You can use any 9v adapter as long as the output amperage is rated higher than the amperage rating of your appliance so yes a 600ma adapter can be used to power a 500ma or 400ma appliance


Can you use 5v 1000ma adapter on a 45v 400ma device?

No you can not. The power supply output of 5 volts is under sized. There is no way that a 45 volt device would operate from it. You will need to find a power supply of 45 volts.


Can you use a DC 9v 300MA adaptor to power a 9v 400MA device?

The voltage would match but the amount of power would likely not be enough to run the device. Under-power will not likely harm the device, but it won't work correctly. Always use the correct voltage/power for your devices!


Can you use a universal ac adaptor set at 9v 400mA for a portable radio set at 9v 800mA?

No. Your portable radio needs 800mA to operate. Your adapter can only produce 400mA. If you make the connection the adapter will rapidly heat up and probably burn out.


Can you use a 12V DC adapter for 5V DC device?

input voltage is strictly according to applications. If use 12V dc adapter power 5V dc device, the 5v dc device would be damaged.


Which current range on the Fluke 8025A do you select to measure 250 milliamps alternating current?

To measure 250 milliamps alternating current on the Fluke 8025A, you would typically select the 400mA AC current range. This range allows you to measure currents up to 400mA, which covers your required measurement of 250 milliamps.


Can you use a dc 9V 400mA ac adapter in place of 9V 500mA adapter?

No. The 200mA adapter will only produce 1/8th the current of the 1600mA adapter, and probably won't even power what you intend to use. If it does, the extreme undercurrent will likely damage the equipment itself. A possible solution is a universal adapter, which may allow you to set the voltage and/or current for use with the intended device.


Can a 12v dc 500mA adapter be substituted for a 12v dc 200mA ac adapter?

No.If it is AC output, it will blow out the power circuits of the DC device.If it is DC output, it doesn't have enough current capacity for the load of the DC device.If you want to power a DC device with a wall wart, make sure the wart is:DC outputCorrect polarity (some have reversible polarity)Exact same voltage as the deviceGreater than or equal to current rating of the device


What will happen if use a 12v 400ma instead of 12v 500ma?

i am not sure, BUT according to the answer in this post:Can_you_use_a_9V_600mA_adapter_on_a_9V_400ma_scanneryou need an adaptor of 9v and AT LEAST 500mA (assuming that the appliance draws 500mA)


Can you use a DC 7.2V 400mA transformer to power a small motor?

First, there are no DC transformers, transformers work on AC. If you have an AC/DC wall converter that has an output of 7.2 v DC, and a max current load of 400mA, then you can use this to power a DC motor that requires less than (7.2 x .4 = ) 2.88 watts of energy.


What happens when you put a 1100mA into a 400mA plug?

You die