12v dc to ac power converter

Not to be confused with a converter, which takes AC to a DC. This calculator helps you determine the DC amperage as it passes through a power inverter. The calculator also provides the wattage rating you are pulling so you can properly size the power inverter you need! This calculator includes the typical inefficiencies in efforts to give you realistic DC Amperage Rating. Full Name Should contain only letters, numbers, and ' -.

Email Address - will not be published Email address should be formatted user domain. Rate Article 1 2 3 4 5. Emmanuel I have a 12v car battery and I also have v electric motor. So can the 12v battery run the electric motor???

Depending if the motor is an AC or DC motor you would need either inverter or converter to run the motor off of a battery. I have a car audio amplifier and subwoofer set up that i can no longer use in my vehicle. It is a watt amp when connected to a 1 ohm load.

The subs play real low, like down to 25hz. Which makes me want to bring this inside for movies. Stupid idea, I know. However, I am still interested in repurposing this setup. The question I am asking is beyond my comprehension, so please be patient. If the amp pulls around amps DC to create watts at 1 ohm. How does that equate to AC? The standard breaker in my house is 15 amp's, with a few at Is there a power invertor that can plug into a volt outlet and provide the power needed for the amp?

Would it require a volt? Would that still not be enough power? Any help will be appreciated. If you need more information, please let me know. Be warned the cooling fan at that rating is likely to be loud. You could place a car audio capacitor inline between the inverter and the amp just like you would on a vehicle.

Most of these can run off of a 15 amp breaker, with the exception of the 75 amp needing a 20 amp, and the 90 or amp needing a 30 amp breaker. In most setups you would need a deep cycle battery meant to act as a buffer for the larger amp draws the power-supply isn't capable of outputting.

Given you are no longer going to have a large amp alternator working as a power-supply you will most likely need an larger battery pack to act as a buffer. I would suggest giving our tech line a call for further information, but a lot of this may be trial an error till you come up with the right system. In the end the music being played can greatly affect your power requirements, so what works for one person may not work for another. Adam Penny Love it. Gives me a better understanding when using AC appS.

TECH You are correct when it comes to the amp draw a 24v inverter will pull half the amps then a 12v inverter. You are also correct you won't see any loss if you use the same amount of batteries in your 12v setup as you would in the 24v setup. The biggest difference is when your AH remains the same Take for instance a 12v AH battery bank and a 24v AH battery bank.

In this case the you might think the 24v bank would last only double the time, but it actually last a little longer than double.

The more amps you pull out of a battery bank the less AH capacity that battery bank is, which is why most batteries have several different AH ratings based off the Amp draw the battery is subjected to. In this case a 12v AH battery pack could withstand a 10 amp draw and last only 10hrs, but the 24v AH battery bank lasts 21hr 41 min.

In this scenario you get an additional 1hr 41min of run time due to the less amps being drawn out of the higher voltage battery pack. Randy Edward Marshall I have a small camper that I only use electricity for a few led lights and a small tv with a total load of about 75 watts at v I have a small w inverter about how long will a amp hour battery last before it would need to be recharged?

If you inputted VAC at 0. At that time you would need to recharge the battery to prevent excess discharge. In most situation like yours we typically see people using a much larger battery pack if they are wanting to run a TV. Obviously, this load only accounted the 75 watts, so with all of the other accessories you could easily be excessively discharging the battery each night depending on how much you are using the TV and other accessories.

Rick Nicholson This calculator is almost spot on, it would be best if you could choose either to list amps or watts. Remember you're making this calculator for newbies, so yes I know you can divide watts by north america and get the amps, but for newbies, easier if you can enter either. John It is hot in Houston. I have a Btu air conditioning with a power consumption of watts and a nominal current of 2.

What wattage inverter do I need? And how long do you think a car battery will last using the above setup? You would be lucky if a car battery could take that draw for even an hour before excessively discharging the battery. As far as what inverter to purchase… You need to account for your surge draw which you state is The inverter you select must be able to handle that draw, and you might want to talk to the manufacturer to see how long that surge lasts.

Most inverters come with a surge rating for less than a second, so if your surge last longer it generally forces you into a larger inverter. BatteryStuff Tech If your device runs off 48 volts then there is no need to be looking for an inverter. Your device is meant to run off either a 48v power-supply , or a 48v battery pack.

Steve Southen i have a watt invertor fitted to my nissan patrol ute. BatteryStuff Tech As you can see by the calculator that would draw about Amps an hour out of a 12v battery pack! Next I would suggest using our Calculator Sizing a 12 Volt Battery to a Load , as it depends on how long you want to run that load for…. Warren This tool was helpful. Just a quick question. I guilt a solar generator with a watt panel, a 12V inverter that puts out VAC and a 12 V battery.

It is supposed to run a stock well that is Amps. With just one battery it only runs 3 minutes the overloads the battery. If I read the calculator right this pump will draw So if I connect 3 12 V batteries in parallel, will that be sufficient to run this pump or should I connect 4 12 V Batteries?

BatteryStuff Tech Now that you used this calculator to determine what you will be drawing out of the battery. This calculator will tell you what size battery pack you need to create depending on how long you want to run the well for. Jason Can I use this in reverse? BatteryStuff Tech In reverse it would be a charger vs an inverter, however if the charger runs off VAC and draws a A then it will put out approximately A on a 48V system, but it might vary depending on the efficiency of the charger.

Ron I have a portable BTU air conditioner unit. The tag shows that it uses watts and 4. It runs very well with a watt generator. How long can it run using an inverter, a amp hour AGM battery rated at watts? This would pull BatteryStuff Tech Glad to help! I will send your recommendation up the food chain and see if we can make it happen!

BatteryStuff Tech Either the multi-meter is hooked up backwards, or you have forced the batteries to charge backwards. Using a separate diode will save the rectifier diodes, since they are likely rated for lower current. You can also check the peak voltage on the signal path, and the headroom required for the parts in the mixer box. It may be that no boost converter is needed, if the signals are all under 9V. Some more light for the photos would have been better.

But, the is visible. So, this is a differential power supply, and requires V. So I guess you are out of luck. What do the other ICs say? It may potentially be possible to use two 12V batteries to power this thing, but one may need extra low drop diodes to protect the voltage regulators.

Not trivial in the amount of space in the box. I recommend you power it from a 19Vdc Laptop style LiPo battery and then use a noisy charger in between uses. This can be attached externally and retrofit into a similar 24Vac plug.

Polarity does not matter, but for sake of convention, positive centre since it is floating. If the charger is needed in operation, then a good earth ground will reduce the leakage noise although this instrument does have excellent CM chokes, better than your average laptop.

The PCB appears to only have 2 diodes as a half wave voltage doubler. With a half wave rectifier the DC output current is equal to 0. So I am not sure you really need 12Vac or where you get that from. Anyway, let's say you still need 12 Vac. Since you've stated you don't have a lot experience with electronics, I think the best way to go about this, is getting as close as standalone solution as possible.

For example, you said you tried feeding 12Vdc to the mixer and it didn't work. As mentioned in the comments, it's possible that 12Vdc is not enough since the actual peak voltage of the sine wave is about volts.

Plus, you don't really have 12Vdc anymore after the rectifier stage—there will be 2 diode voltage drops for a full-wave recitifier so what you may actually be feeding to the dc regulators after that more like 10VV range. One thing to try could be a boost converter after the 12Vdc so that you get 17VdcVdc out that may need to be higher to account for the diode voltage drops mentioned before.

This is boost converter that may work is the MAX, click here. It can take a voltage anywhere from 3V to 28V and can output up to 28V adjustable with resistors. You said that when you tried feeding DC, you had 'weird' results, maybe it had to do with the lower voltage 12Vdc. I just thought I give an idea. Trying to come up with circuit to convert 12Vdc to 12Vac is a lot more complex, in my opinion, and you said you have basic electronics knowledge. Sign up to join this community.

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Create a free Team What is Teams? Learn more. Asked 3 years, 6 months ago. Active 1 year ago. Viewed 9k times. JRE Paul Weber Paul Weber 3 3 silver badges 9 9 bronze badges. A class D H-bridge and a 50 Hz source would be a neat solution too.

Unless you are willing to open up and modify your existing sound system, at which point you won't be needing any AC. Try feeding it 17 V DC. Show 6 more comments. Active Oldest Votes. They're noisy. It's the best option from the size, noise ,time spent and cost. Dorian Dorian 2, 2 2 gold badges 11 11 silver badges 20 20 bronze badges. Everything else seems very complicated.

Did not think that converting DC to AC would be so difficult Add a comment.