Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order

[tharani]

It might not mean something but volts is what we pay the electricity bill for

kwatts gets converted to volts in meter reading.


the normal current supply to homes is ac


the current pay would be 13440 dollars for a month

Wut? Where on earth is that?

Normal supply is ac (depends on what psu you are using)

[tharani]

India is 240V same as the Brits who first installed it there......

Yes, that's my experience, but a search of the infallible Google reveals that dc supply is available, also it's where the poster tharani comes from.

What do you mean by poster.?

omg i get it you mean one who posts on bitcoin talk forum is a poster .

lol

[tharani]

It might not mean something but volts is what we pay the electricity bill for

kwatts gets converted to volts in meter reading.


the normal current supply to homes is dc


the current pay would be 13440 dollars for a month

Wut? Where on earth is that?

Caravan site?  

Apparently the answer is India.
You learn something every day......

India is 240V AC same as the Brits who first installed it there......

now its ac ( depends upon what psu you are using for the miner )

[tharani]

It might not mean something but volts is what we pay the electricity bill for

kwatts gets converted to volts in meter reading.


the normal current supply to homes is ac


the current pay would be 13440 dollars for a month

Wut? Where on earth is that?

Caravan site?  

A normal residential household consumption will have ac supply in india

(all calculations above are for dc as per the psu you are using values may differ for ac)

i don't think a single caravan would charge 440 volts for 2 months lol

Also a even a bunch of caravans won't have huge consumption even if they had air conditioner and some electrical appliances.

It's funny that you think it is a caravan site .

[IconFirm]

now its dc

I really don't understand why you are saying that. I have lived & worked in India & still visit frequently, I know for a fact that it uses 240V AC - also, every internet search will confirm this. Also, DC does not travel well over distance, India is vast, which is why 240V AC is used. Any household in India that is using DC is not being supplied by the grid.

The caraven thing was a joke, as it was the first thing that came to mind that uses DC. No offense was intended.

Sources:

https://www.quantumbalancing.com/worldelectricity/electricityif.htm

http://www.adaptelec.com/index.php?main_page=document_general_info&products_id=320

http://www.indiaquickfacts.com/content/india-electricity-electrical-plugs-converters-electric-sockets-electric-adapters

& even Wikipedia got it right.....

https://en.wikipedia.org/wiki/Mains_electricity_by_country

[tmfp]

Brits installed it 67 years ago or maybe even before 80 years

it's been more than 69 years after we got independence and have our own democracy and gov

now its dc


its not a new fact it has been the system for years' apparently you don't try to get to know facts about other countries cause you don't need it as a necessity.

Mostly people here would be from the us , uk and  the europe

Whoa slow down.
FACT: every visit I have made to India (many), I have used AC in hotels, offices, shops, beach bars etc.
India has an AC grid BUT there is a perfectly legit way of receiving DC to your home there but yes, it will be off grid supply unless inverted (like a caravan)
Lighten up guys.

[Tupsu]

Brits installed it 67 years ago or maybe even before 80 years

it's been more than 69 years after we got independence and have our own democracy and gov

now its dc


its not a new fact it has been the system for years' apparently you don't try to get to know facts about other countries cause you don't need it as a necessity.

Mostly people here would be from the us , uk and  the europe

https://en.wikipedia.org/wiki/Electricity_sector_in_India

[tharani]

I don't know a well knowledged friend told me it was dc next time i pay the electricity bills i will ask the board .


Yeah sometimes i take the card and go to pay in the office .

well Digitalbitcoin (bitcointalkmember)

told it was ac for homes and dc for industry.

[tmfp]

Whoa slow down.
FACT: every visit I have made to India (many), I have used AC in hotels, offices, shops, beach bars etc.
India has an AC grid BUT there is a perfectly legit way of receiving DC to your home there but yes, it will be off grid supply unless inverted (like a caravan)
Lighten up guys.

everywhere you visited comes under industrial sector, hotels bars, offices , shops all come under industrial not residential.

which digitalbitcoin(bitcointalk member) says is dc supply rofl

why are you confusing guys

someone says its ac and someone says its dc lol

lol, no, they're commercial, not industrial.

This is industrial



This is commercial 

[tharani]

IMPORTANT UPDATE

IT IS AC FOR RESIDENTIAL

DC FOR INDUSTRY

If commercial supply comes under residential it is ac then

IT IS AC

FINAL

SUPPLY UNTIL TO THE PLUGPOINT FOR RESIDENTIAL IS AC

DIFFERS UPON THE POWER SUPPLY UNIT YOU ARE USING .

OK GOT IT .!!!!!!!!!!!!!!!!!!!

NO CONFUSION

The overenthusiastic friend of mine had calculated according to usage of ups he does not know much about psu's or miner's

he says that the current supply will be ac until plug point and when it reaches some devices the adapter converts it to dc.

So he thought the input was in dc which i clarified it with him today.

SO UNTIL PLUGPOINT IT IS AC

[NotFuzzyWarm]

Fine. AC, DC, whatever. To makes things easy, let's use water as an analogy to electricity:
For water the amount of force it has is measured in PSI, kPa, whatever. For electricity the amount of force is Volts.
A quantity of water is gallons, liters, drams. A quantity of electricity is Amps.

Now comes where the confusions seems to be: The amount of WORK the volts and amps together produce. The unit for that is Watts or Joules and has a simple formula. Watts = Volts x Amps and the rate of use is Watts/time

Everywhere except apparently India the electric bill of all consumers be they residential or industrial is based on Watts  - from an AC source - consumed. For most loads this will more or less be a constant value regardless of what the line voltage does because generally if the line goes low the load will try to pull more amps to keep power constant (for motors and non-incandescent lighting).

[in2tactics]

... DC does not travel well over distance ...

Your statement is simply not true. The power loss experienced due to long distance power transmission is less for DC than it is for AC. The issue is that DC is typically harder to convert to higher or lower voltages. DC voltage conversion is also traditionally more expensive, but there have been recent advances that should bring the costs down. There are other considerations in the AC vs DC war with regard to basic electrical theory, but we are already quite off-topic.

I suggest that folks interested in learning about AC vs DC power transmission read the article in the link below as it explains some of the basic pros and cons.

http://www.theenergycollective.com/roger_rethinker/204396/ac-versus-dc-powerlines

[tharani]

... DC does not travel well over distance ...

Your statement is simply not true. The power loss experienced due to long distance power transmission is less for DC than it is for AC. The issue is that DC is typically harder to convert to higher or lower voltages. DC voltage conversion is also traditionally more expensive, but there have been recent advances that should bring the costs down. There are other considerations in the AC vs DC war with regard to basic electrical theory, but we are already quite off-topic.

I suggest that folks interested in learning about AC vs DC power transmission read the article in the link below as it explains some of the basic pros and cons.

http://www.theenergycollective.com/roger_rethinker/204396/ac-versus-dc-powerlines

the calculations were based on the kwh to volt converter for dc current.

http://www.rapidtables.com/calc/electric/kw-to-volt-calculator.htm

input the kwh and amp

this is not off topic it is about the power supply needed for the s9 only

and we are discussing about the pros and cons of it.

i inputed 5.1 amp for the provided kwh also i told you it was a test value .

what use is it it has to run for 12 months to get back the 3000 dollars and also pay the electricity bill for it and mine about 0.1 btc per day.

[delicin33]

Fine. AC, DC, whatever. To makes things easy, let's use water as an analogy to electricity:
For water the amount of force it has is measured in PSI, kPa, whatever. For electricity the amount of force is Volts.
A quantity of water is gallons, liters, drams. A quantity of electricity is Amps.

Now comes where the confusions seems to be: The amount of WORK the volts and amps together produce. The unit for that is Watts or Joules and has a simple formula. Watts = Volts x Amps and the rate of use is Watts/time

Everywhere except apparently India the electric bill of all consumers be they residential or industrial is based on Watts  - from an AC source - consumed. For most loads this will more or less be a constant value regardless of what the line voltage does because generally if the line goes low the load will try to pull more amps to keep power constant (for motors and non-incandescent lighting).

reading all this bring me back to my high school memories...lol

[tmfp]

reading all this bring me back to my high school memories...lol

OhMG 

[tharani]

i just wanna know the correct current costs for antminer s9 for 24 hours

for ac single phase and three phase

i don't know correct power factor.

also i don't know the amps

calculator here

http://www.rapidtables.com/calc/electric/kw-to-volt-calculator.htm

Also i am asking you guys to tell how much a antminer s9 is gonna produce in a day.

[NotFuzzyWarm]

i just wanna know the correct current costs

for ac single phase

i don't know correct factor.

My s9's each pull around 1,300w.
From a 208VAC line each pulls 6.25 Amps.

The PSU's for these are small enough that they are all single-phase.

1 or 3-phase only matters in regards to what the utility charges you. In urban areas a general rule of thumb is that if it is a commercial/industrial user and they require more than around 50kw it will generally be 3-phase power supplied.

[tharani]

i just wanna know the correct current costs

for ac single phase

i don't know correct factor.

My s9's each pull around 1,300w.
From a 208VAC line each pulls 6.25 Amps.

The PSU's for these are small enough that they are all single-phase.

what is the power factor.

if you got a power factor we can come up with a approximate value

also without power factor the voltage results would be in infinity also you mentioned a watt value and not a kilowatt value

[tharani]

Extremely sorry guys for saying power supply is dc power supply in india is ac

also i will double clarify before having posted on here.not from just getting info from  a oversmart/overenthusiastic person.

[NotFuzzyWarm]

i just wanna know the correct current costs

for ac single phase

i don't know correct factor.

My s9's each pull around 1,300w.
From a 208VAC line each pulls 6.25 Amps.

The PSU's for these are small enough that they are all single-phase.

what is the power factor.

if you got a power factor we can come up with a approximate value

also without power factor the voltage results would be in infinity also you mentioned a watt value and not a kilowatt value

<facepalm...>  
Where are you getting these ideas??
1,000w = 1kw
Power factor is apparent power/real power. It has nothing to do with this discussion and is generally always assumed to be a value of 1, For acedemic and nit-pickers however most good PSU's have a PF of around 0.9

Dude (or dudette) - read up on basic Ohms's (for DC) and Watt's (for AC) Laws