Hi, i have an app which will alert me low electric supply and sufficient supply on battery mobile charging. I have three phase connection.
I thought of charging in the same plug point which once showed sufficient but next time , if plugged in to the same , it shows low supply. i changed to one which once showed low and now it has sufficient.
What is the normal supply, and why low supply and sufficient supply.
In otherwords, what is meant by slow and sufficient, and how it alerts?
It is also strange that when all are using at the evening time, the plug in shows sufficient supply and when i tried at afternoon, where the supply will be less utilized , it alerted low supply.
Any expert view on that,
when i have suffient supply shown, the mobile gets charged quickly at normall 2 andhalf hours., getting steady flow of above 850mA
When i charge at low, the mA flow ranges in 290 to 305 mA,the charger took more time. Moreover, is that a 804 mA at times means a near 1 amp current supply , and battery is working properly utilizing its capacity and when it goes down to 300 mA, it means it charges less than .5A and takes much time.
Is there any direct relation between ac and dc current.
i need a detailed reply

 

What do you mean by "three phase connection"? Do you mean you have a 3 port USB charger?

I have a three port USB charger. Two ports are regular USB and one has the USB connector...... but can supply much more current for faster charges, for special devices.

 

Hi, it is not usb port. The charger plugged in to the ac. main supply thro plug, as we normally use

 

Do you normally use 3 phase ac power?

 

How are you determining 3 different phases?

 

i have got 3 phase connection. What is determination
i have given 3 phases by connecting some points of some room for 1 phase and like that for 2 phases. i do not know, how it could be explained

 

Ok, I am not familiar with your power line system. All power line 3 phase that I have come across, there are small differences in phase voltage. That would be normal.

The only perfect 3 phase I have seen is solid state generated.

But it seems you have grid problems where you are. Name and measure the phases.......so you can see if there is a strong one over time.

 

I think having 3 phases is not the problem. If I understand what you are asking, your mains supply voltage is varying widely. What is your nominal mains supply voltage?
A "universal" switch mode power supply should tun at full power from 100V to 240VAC. Some have wider ranges. If your power is varying greatly it may be worth contacting your supply company and/or getting your wiring checked out.
Than again, it may be a problem with your charger and not the mains supply at all.

 

Hi, i have asked for the reason in fluctuations. Normally 230 V is maintained always on all plugpoints. is it correct
Every device and equipments is working properly.
My query is about the power supply

 

Hi, i have asked for the reason in fluctuations. Normally 230 V is maintained always on all plugpoints. is it correct
Every device and equipments is working properly.
My query is about the power supply

If you are concerned about the power supply, why are you mentioning the phases. You say they are always OK, so how does moving them around, which provides no consistent difference, relevant.

The app you are using to monitor the charging reads the input to the phone, I assume. Have you checked to be sure the cables you are using are all OK?

It's quite hard to understand what your question really is. Can you draw a picture of what you have, and how you have tested things?

 

Hi, i am also gettting confused because of usb ports reply and all that. I was experiencing slow charging and in checking i found that the voltage supply if it is low, the app charger tester will show low supply and if it is normal, it shows, sufficient supply while i plulg in.
i really found the app useful alert.
My query is if i plug the charger , the next time on the same plug, which says sufficient, i found low supply alert and my phone takes as much as 5 to 6 hours for charging. The battery capacity is 2600 mAh.If sufficient is shown, then it gets charged normally in 3hours.
I have explained clearly about current flow in my first post. Please say, is there any direct relation between converted current flow and the power supply. The app shows current flow in mA.
I also wish to say, that i have a new battery and charger and usb cable all original from samsung

 

Your ability to explain things clearly is dubious. In the case of USB 2.0 ports there is a default specification that a USB host should provide for 100 mA. If the USB device requires more it can negotiate for up to 500 mA using the USB protocol. The ability to get 500 mA is not guaranteed by the specification and may or may not be available. 100 mA is probably insufficient to charge a device in your expected time frame. Other than that I have no idea what you are doing or what problems you may be experiencing.

AC current variation is mostly an illusion. The source impedance of the mains is very low and will supply whatever current a load requires. The most obvious example of this is a fuse or a circuit breaker that will trip before a fire starts. It is the variation of load impedance that causes a current variation on the mains.

 

What country are you in?
I am guessing that either the terminology used is incorrect (three phase) or you have 1ph outlets fed from a 3phase transformer with a star neutral, with different outlets on separate phase/neutral.
In either case the voltage would have to drop very much lower than would be normal for brown out condition to see an effect on say a SMPS type supply which in most cases are self regulating in brown out conditions.
More details of the exact nature of the equipment is needed.
Max.

 

I did not find anything explained clearly in the first post. And the comments about "3-phase " certainly were confusing as well. What I think I am reading is that you have an application installed on your phone that claims to be able to read the charging current, and that at different times it gives different readings. Then it seems that you are wondering if the mains supply you are connecting to is "insufficient". An engineer, which you say in your profile that you are an engineer, should be able to use a voltmeter and verify that the mains supply is either within the standard range or it is not within the acceptable standard range.
None of us can see what sort of device you are using to charge the phone, nor can we see the condition of the cable and connectors. All of those can affect the rate of charge, and how long it takes. ALSO, why do you believe that some phone application software, that we know nothing about, is accurate?
My suggestion is to measure the mains supply voltage and then let us know how it is changing. We are not there and so we have no idea as to how it may be changing.