If I have a 12 volt power source with up to 30 amps of current available on the input side. would I be able to output 19v at 3 amps? thanks ahead
1787804
hello cj, this buck converter is step down type, this means output voltage will always be smaller than input voltage, in other words if you apply 12 volts at input, output voltage maximum will be roughly 10.5 volts. what you are looking for is a step-up converter.
471768
Amps are calculated by watts over volts. So at 12v this would produce 8.3 amps. It's about two feet by four feet.
89456
Power = Volts x Amps... So 300 is more than enough. Personally I bought the 500 Watt version because I use it for many things
817527
Minimum of a 300 Watt power supply.(Minimum recommended power supply with +12 Volt current rating of 18 Amps.)
1590943
I wouldn't. The supplied power supply is 15v, 1A. I don't know how it's regulated inside the box, but it's likely that it goes through a second stage of regulation, dropping the voltage to the 12v range...at least that's how I would design it. If you drop the power supply to 12 volts, it'll mess up that circuitry. Even if you were to use a 15v 3A power supply, it's unlikely it would make any difference. Overall power consumption is minimal and going from a power block with a 15 watt capacity to one with a 45 watt capacity is unlikely to do anything. (And it might even hurt things...running a poorly designed power supply far below rated capacity can sometimes cause the output voltage to increase above spec. That might explain why it worked okay on the 12 volt unit.)
1910964
If you are using a power supply rated at 3 amps you should never put a load on it that is over 3 amps. It is just asking for troubles. Power supplies are quite inexpensive lately, so, take a few bucks and buy what you really need. Good luck with your project.
1464271
No. This unit uses 18 and 20 volts on a multipin connector, you could use a small inverter in front of it to run from 12 volts.
135984
Hello Harold. I'm assuming you are referring to the maximum wattage this unit could draw at one time. If that is the case, in theory the unit could draw 2400 to 3400 surge watts. That is a totally dead battery with the 200a 12v start option.That is only a surge estimate, but lets say you are charging a 12 volt battery at 30 amps, then you are looking at 360 watts. Volts X Amps = Watts This is basically a dc power supply and the 31a intermittent is worse case scenario. If the 31amp max is met then the total wattage would be 110 X 31 = 3410.Hope this helps.
1552473
Dear Dale, what is the current rating of the fan? the converter can supply 3A maximum. Beware that you cannot exceed the input voltage (40V). 36 VDC is fine if the source doesn't generate spikes above 40V. A 12 gauge wire is massive, much more than you need for the 3A this converter can supply. Again, I have no idea if it is enough for your fan. Regards, Jorge
327029
The output is indeed 12 volts, but the label on the power adapter states 12v AC. I've never before seen a power converter that put out alternating current. I suppose this this could be a misprint on the label, but I can't say for sure. It is clearly marked Input 120v AC, Output 12v AC. I double checked. It could be that alternating current is necessary for this type of device.
1133335
According to my ampacity tables the absolute max is 15 Amps, however I wouldn't push more than 10 Amps total at 12 Volts DC.
96886
What the specs I have are: input 100-240V / 50/60 Hz --- output 12V - 2A / Center pin positive. NOT so sure this will work for you being 12VDC. The Amp rating is max load it can handle, but the output make destroy the hard drive controller. NEED to find one with 5VDC output with 1A or max of 2.5A. Hope this helps.
1427984
If you were going to use all four ports at their maximum rated capacity you'd need a 350 watt supply minimum. How you arrive at that is up to you. It can be powered by 11-18v supply, so if you were going to use a 12v supply, you'd need around a 26 amp supply, but if your power supply is 18v, it would only need to be 18 amp. I'm powering mine from a bench supply I use for electronics work that is based off an ATX power supply with a 30A 12v rail.
1532509
My background is Electrical Engineering. I have one of these and it's rated at 12V 1300 mA (1.3 Amp) Voltage x Current = Power. So in this case 12 x 1.3 = 15.6 Watts. So, at 6 Volts the available current is 15.6 W / 6 Volt = 2.6 Amp or 2600 mA. So at 6 Volts it should provide up to 2,600 mA, as rated. I wouldn't be afraid to try it at 6 Volts and 1300 mA since that's about 50% of its rated load.
1082624
I am an electronics geek so here it goes. I don't know what u mean about the ma input but you can use any standard wall outlet. This unit is great and puts out a very stable 300ma at 3, 4.5, 6, 7.5, 9, and 12v DC. If you need 4.8v 5v is the closest it would get. However you could get a 4.8 voltage regulator and run the 5 thru that and the output would be fine. You could just solder the components onto a proto type board and there you go, it would work. You could get the parts at a Frys or online. But this unit will not put out 4.8v right out of the box, it has no setting for it. I don't know what you are using it for and if the 4.5v is exact, because 5v is really close, but that's it. I really hopes this helps you. Please keep in mind I do not think there is a standard AC to DC that will output something exact as 4.8v, that's pretty specific. Again I hope I helped you. Have a great day. Kevin P
319504
Yes it could work for that though it might be a bit big to fit neatly it will handle 3 A at 125 V ad so in theory it would handle 30A at 12V AC so id say up to a 15A load at 12V DC should be fine power wise. Me personally I'd likely opt for a toggle switch I cloud easily mount through the dash
161684
My answer would be NO. Does not put out that kind of voltage. Does good on 12 VDC.