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Can a 12V 5-6A device be run with an AC-DC converter rated at 12V 12A?
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.
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Yes. Keep the cord as short as possible to avoid a voltage drop. Use a larger cable for longer runs.
Can you use a 12V 400mA power adapter instead of a 12V 800mA to run a device that calls for a 12V 800mA?
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 volt…age than it is rated for will cause it damage.
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.
input voltage is strictly according to applications. If use 12V dc adapter power 5V dc device, the 5v dc device would be damaged.
By power pack, I'm assuming that you mean transformer or power adapter? It's not recommended. One of three things may occur - 1) The powered device will fail due to unde…rcurrent from the transformer. 2) The transformer will fail due to the connected device attempting to draw too much current. 3) The transformer will overheat, melting its housing and possibly starting a fire from nearby combustible materials (including the housing and wire insulation). I would tell you that you should go to your nearest Wal-Mart, Target, Radio Shack, or another retailer that sells power adapters, and purchase one with enough power for your application. (Hint - you can always go a little over on current and be safe, though the transformer won't be as efficient.)
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 i…t'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.
Yes, no problem whatsoever. The adaptor will only be operating at 50% of it capacity.
12-V a.c. is a root-mean-square value, which is exactly equivalent to 12-V d.c., so the brightness of the lamp will be identical, regardless of whether it is connected to an a….c. or d.c. source.
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
Converting 5 Volt DC to 12 Volt DC Best thing to use, (well, at least the quickest) is a DC to DC converter module.
There are a variety of ways to do it but it is vital to note that a transformerless power supply is not isolated from the mains supply. Anything that is attached to it will al…so not be isolated from the mains supply. The simplest method is to use a half wave rectifier followed by a resistive network to drop the voltage to a suitable level. This is a solution where minimal current is required as the power dissipated by the resistor network will be about 20 times the power used by the low voltage load. Efficiency with this method will be around 5%. More complex solutions use switching circuits such as buck converters. These can be much more efficient (95% in some cases) and are able to provide good voltage stability. It is vital that any design that connects directly to any mains supply is supplied by a qualified and experienced designer and is used only for applications where users will not be exposed to any part of the circuit. Getting it wrong can have fatal consequences.
"How do you convert 12v DC to 5v DC?" Simple use a 2.25 ohm 25watt ballast resistor;renault used them to drop the voltage for the Engine control computers.
if you have 12v dc then you can use a 4 ohm resistor
First you need a step down transformer. A step down transformer has less turns of copper in secondary then in primary. You can calculate with this formula # of primary turn…s/Voltage of Primary= # of secondary turns/Voltage of secondary When you know 3 factors, you can easily find out the forth one by easy mathematical calculation From a step down transformer the 12 V AC output, needs to be converted into 12 V DC by a simple reverse bias or diode A diode does a HALF-WAY RECTIFICATION which means it allows one way of current, cut downs the reverse that is AC Current in which change of polarity takes place or a diode rectifies AC to DC or unidirectional current
The short answer is no. The DC adapter with output of 12 V @ 1000ma is the same as 12 V @ 1Amp. Since your device requires 2Amps of power, it will draw more po…wer than the adapter can put out so the adapter will quickly overheat and burn out.
The device may take more current from power supply....so cannot be used