hello this device does not work as booster ?. I mean, if I have 5 volts at the input to its output could be 9 volts? thanks I have that doubt.
1517149
No, the device only works as a buck converter, so the output will never be higher than the input. If you want to have a higher output voltage than the input voltage, you need to look for a "boost" converter. They are not as common as the buck converters, but there are many of them out there, all you have to do is search using the words "boost converter". You will then be able to put in 5 volts dc and have 9 vdc on the output.
1517150
This one will do what you want:LM2577 DC-DC Adjustable Step-up Power Converter Module
1517151
no it is used for stepping down voltage not bringing it up so you can turn 9v down to 5v but not vice versa. You need a boost converter i would maybe try http://www.amazon.com/3-5-30V-4-0-30V-Booster-Converter-Regulator/dp/B008FLE7PA/ref=sr_1_2?ie=UTF8&qid;=1407931978&sr;=8-2&keywords;=boost+converter
1517152
Hey this is a voltage regulator, as such it is capable of decreasing the voltage, and depending on how it is set up maintaining it stably. However, increasing the input voltage with one unit will not be possible. With two you may be able to develop a positive and negative voltage and depending if alternating dc or not you could set them out of phase and get to that. It depends on what the goal is. There are however much easier ways to do this.
966817
No, the output will always be less than the input. If you want an higher voltage, search for 'boost converter'
575738
it does work pretty good. add a booster will be perfect.and will work a lot better for phone use.
1227688
I'm sorry, but I don't know as it's never worked as advertised. Not sure it it's just defective, or I'm too ignorant to know how to make it work.
580820
I recommend you stick with same output V as the original equipment. I don't know what you are powering up, but some circuit board items might not be able to handle the added volts.
1226041
Please make sure your local 4G signal is using 850MHz&1900MHz, as we known in USA, they use 700MHz in 4G. If it is like this, this booster not works on 4G
605789
I don't think it will go that far. While the booster takes very little power which would enable a solar panel to power it (as long as it can put out 120 volts at 10 - 15 watts), the signal from the indoor antenna only travels about 20 - 30 feet it seems. I have the indoor antenna in my living room, and it gives me a stronger signal in the living room, kitchen, and dining room, but that's about 30 feet at the most. Beyond that, if I go outside, I don't see a difference with the booster.
1075302
it can run from as low as 5v (at least 1amp but 1.5amp is better). 9v works fine. 12v is what is listed but since it works at 5v, 12v seems a bit too high to me (extra volts are burned off as heat; never a good idea). I suggest using a good strong 5v dc psu.
1957039
I don't think so -- it is labeled as a booster, so there should be some cleaner for it to boost.
1901563
Yes, I bought it originally because of my battery bank is also 24 Volt. This is ok. But I cant actually recommend this device. I bought it not only for inverter-function but also for charging and bypassing when generator comes into game. The last two, charging and bypassing, did never work out. I don't know if I got it already defect by bad luck or if it is just low quality.
1819044
It probably doesn't auto detect mulit-voltage sources. It's only using 110-120 volts.
290412
I would think so... But isn't 100% sure. It just depends on the connectors if it would fit on the specific booster.
548888
I don't know for sure, but remember when you are using a power inverter for every amp you pull at 110 volts you're pulling 10 amps at 12 volts. Most likely the device cannot deliver the amperage to the inverter even with no load because the inverter consumes power even though you're not placing a load on it.
685904
I just used a 12v adapter I had lying around. I cut the end off and used a multimeter to make sure the polarity was correct and hooked it to the board. Please, do be careful about the where you put the positive and negative. I remember reading on the net that this device won't protect itself from reverse polarity on the dc voltage. Meaning, the circuit board will be ruined.
663932
Well, although other people have said that "any" input voltage between 3.5V-30V is fine (which is true), there are other things to consider when using the device to avoid damage, such as: the voltage ratio should not exceed 3, in example, means you cannot use 3V to go up to 15V, that will be a voltage ratio of 5. Description says it can supply up to 5A but then it clearly says it can operate at 3A with good ventilation, my personal safe threshold for supplying devices is 50% maximum capacity, so I don't ever use it for more than 2A, this rule of thumb always worked fine for me.
2029404
The problem with ours is that it blew the fuses that it came with and the two extras so I don't have a clue whether or not this works. I'm not sure how they blew, but I never tinkered with it because I bought this for my mother. She didn't get anything to work (note we live in the US) even when she used different options for the input volts. (she tried both 110 and 220, both blew a fuse) I'm sorry I can't help you with this, but I think we got a defected version or some kind of messed up one.
315111
This device does NOT charge at 4.2 amps or even 1 amp in your car. It's power output specs are for 24 volt trucks and military vehicles, not 12 volt cars. The maximum input is 1,000 milliamps. That is 1 amp at 12 volts. Unless the manufacturer has figured out how to break the laws of physics (conservation of energy) there is no way that this device has more than 2 amps output at 12 volts. I know. I was dumb enough to buy one, only to watch my battery drop while "charging" and using GPS. I estimate that the charger was putting out about 700 milliamps in the android output. I'm returning it. This device does NOT charge at 4.2 amps or even 1 amp in your car. It's power output specs are for 24 volt trucks and military vehicles, not 12 volt cars. The maximum input is 1,000 milliamps. That is 1 amp at 12 volts. Unless the manufacturer has figured out how to break the laws of physics (conservation of energy) there is no way that this device has more than 2 amps output at 12 volts. I know. I was dumb enough to buy one, only to watch my battery drop while "charging" and using GPS. I estimate that the charger was putting out about 700 milliamps in the android output. I'm... » Read More This device does NOT charge at 4.2 amps or even 1 amp in your car. It's power output specs are for 24 volt trucks and military vehicles, not 12 volt cars. The maximum input is 1,000 milliamps. That is 1 amp at 12 volts. Unless the manufacturer has figured out how to break the laws of physics (conservation of energy) there is no way that this device has more than 2 amps output at 12 volts. I know. I was dumb enough to buy one, only to watch my battery drop while "charging" and using GPS. I estimate that the charger was putting out about 700 milliamps in the android output. I'm returning it. « Show Less