Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 256.

tharani

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don't piss me off or else you will see the tigress

Quote from: in2tactics on August 22, 2016, 08:17:03 AM

Quote from: IconFirm on August 22, 2016, 06:20:47 AM

... 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.

in2tactics

hero member

Activity: 578

Merit: 501

Quote from: IconFirm on August 22, 2016, 06:20:47 AM

... 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

NotFuzzyWarm

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Evil beware: We have waffles!

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).

tharani

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Activity: 308

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don't piss me off or else you will see the tigress

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

tmfp

legendary

Activity: 1932

Merit: 1737

"Common rogue from Russia with a bare ass."

Quote from: ?? on ??

Quote from: tmfp on August 22, 2016, 06:28:06 AM

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 Wink

tharani

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Activity: 308

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don't piss me off or else you will see the tigress

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.

Tupsu

legendary

Activity: 1218

Merit: 1003

Quote from: tharani on August 22, 2016, 06:04:14 AM

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

tmfp

legendary

Activity: 1932

Merit: 1737

"Common rogue from Russia with a bare ass."

Quote from: tharani on August 22, 2016, 06:04:14 AM

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.

IconFirm

hero member

Activity: 1438

Merit: 574

Always ask questions. #StandWithHongKong

Quote from: tharani on August 22, 2016, 06:04:14 AM

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

tharani

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Activity: 308

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don't piss me off or else you will see the tigress

Quote from: IconFirm on August 22, 2016, 04:27:06 AM

Quote from: tmfp on August 22, 2016, 04:19:05 AM

Quote from: tharani on August 22, 2016, 03:56:10 AM

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? Cheesy

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 Cheesy

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 .

tharani

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Activity: 308

Merit: 250

don't piss me off or else you will see the tigress

Quote from: IconFirm on August 22, 2016, 05:50:49 AM

Quote from: tmfp on August 22, 2016, 04:58:25 AM

Quote from: IconFirm on August 22, 2016, 04:27:06 AM

Quote from: tmfp on August 22, 2016, 04:19:05 AM

Quote from: tharani on August 22, 2016, 03:56:10 AM

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? Cheesy

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

sr. member

Activity: 308

Merit: 250

don't piss me off or else you will see the tigress

Quote from: tmfp on August 22, 2016, 06:00:27 AM

Quote from: IconFirm on August 22, 2016, 05:50:49 AM

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. Huh

?

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

lol

tharani

sr. member

Activity: 308

Merit: 250

don't piss me off or else you will see the tigress

Quote from: tmfp on August 22, 2016, 04:19:05 AM

Quote from: tharani on August 22, 2016, 03:56:10 AM

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)

tmfp

legendary

Activity: 1932

Merit: 1737

"Common rogue from Russia with a bare ass."

Quote from: IconFirm on August 22, 2016, 05:50:49 AM

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.

IconFirm

hero member

Activity: 1438

Merit: 574

Always ask questions. #StandWithHongKong

Quote from: tmfp on August 22, 2016, 04:58:25 AM

Quote from: IconFirm on August 22, 2016, 04:27:06 AM

Quote from: tmfp on August 22, 2016, 04:19:05 AM

Quote from: tharani on August 22, 2016, 03:56:10 AM

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? Cheesy

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

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

tmfp

legendary

Activity: 1932

Merit: 1737

"Common rogue from Russia with a bare ass."

Quote from: IconFirm on August 22, 2016, 04:27:06 AM

Quote from: tmfp on August 22, 2016, 04:19:05 AM

Quote from: tharani on August 22, 2016, 03:56:10 AM

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? Cheesy

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

IconFirm

hero member

Activity: 1438

Merit: 574

Always ask questions. #StandWithHongKong

Quote from: tmfp on August 22, 2016, 04:19:05 AM

Quote from: tharani on August 22, 2016, 03:56:10 AM

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? Cheesy

tmfp

legendary

Activity: 1932

Merit: 1737

"Common rogue from Russia with a bare ass."

Quote from: tharani on August 22, 2016, 03:56:10 AM

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?

tharani

sr. member

Activity: 308

Merit: 250

don't piss me off or else you will see the tigress

Quote from: philipma1957 on August 21, 2016, 08:10:51 AM

Quote from: tharani on August 21, 2016, 07:14:58 AM

Guy's i was considering buying the s9

I just want to know its daily power consumption in volts.

so that i can calculate the current costs for it.

Also it would be good to know how much would it be able to produce in a day , thanks !!!

volts means nothing

watts is what you want

about 1400 watts per hour that is 1.4 kwatts

which is 33.6 kwatts a day
or 1008 kwatts a month

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

kwatts gets converted to volts in meter reading.

also we need the amps of the current which is connected and the normal current supply to homes is ac depends on what psu you are using

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

lets say s9 has 5 amps

it will consume 201600 volts

450 volts is 15 dollars at current rate.

the current pay would be 13440 dollars for a month

on calculation for 5 amps .

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

the value will differ from country to country

this is just a example calculation

in my country the voltage consumed is taken into consideration .

maybe it is nothing to you but for this country it means thousands of dollars income to the gov .

philipma1957

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'The right to privacy matters'

Quote from: Biodom on August 21, 2016, 05:52:22 PM

Quote from: philipma1957 on August 21, 2016, 05:32:11 PM

Quote from: not.you on August 21, 2016, 05:21:02 PM

I would rather they simply honored the warranty. If it breaks in the first 90 days it gets replaced without a lot of rigamarole on their part. Buying a miner and getting a 10% coupon on the next is worthless if the miner I bought only performs to 66% of spec. There are a lot of tech companies that provide excellent and reliable warranties. Bitmain could be one if they wanted to.

Yeah but the shipping back to China at high cost is a killer along with no cross shipping.

It is not like an Intel CPU which ships at low cost. BTW When I killed my Intel i5 6600k I had two options cross ship at an extra cost of 25 usd or send it in and wait . I went the cheap way and had a new CPU in 8 days. If I cross shipped for 25 extra I could wait to ship the dead one back and would of had it in 2 days. I did not need it that fast so I saved the 25 extra cost.

I actually do not hate bitmaintech but they are a bit short on service if gear breaks down. They need to adapt on this.

Some reasons:

1) they are helping gpu miners with their short warranty
2) break even on asic gear is not 60 to 120 days. So the 90 day warranty means your gear is almost certain to not roi under warranty this helps gpu mining
3) they are pretty well known for not honoring warranty this helps gpu mining

Basically here is my Eth setup and I convert most coins to btc. Bitmaintech has created demand for gpu mining. Mostly over their warranty issues.
18 cards two 4 card rigs and five 2 card rigs. Every piece has at least 1 year warranty or more. Most have a 2 year warranty.

https://i.imgur.com/R72hWho.png

phil, what are you doing?

releasing the secret of how to get the same amount of btc with 2.5-3 times less watts and a real warranty?

It is an open secret. Grin

Bitmaintech is king of ASIC world

And they need to watch for gpu world more then anything else.

Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 256. (Read 531168 times)