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Author Topic: Community Miner Design Discussion  (Read 33796 times)
chiguireitor
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March 07, 2016, 11:11:45 AM
 #221

...

 Not sure I've ever seen an automotive blade-type fuse mount for a circuit board, but they DO make sense and should be cheap if they exist, and the fuses themselves are quite common in many ratings (specifically including 20 and 30 amp).

...

This could be a candidate, trouble is they don't specify the rating of the socket.

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March 07, 2016, 11:16:57 AM
 #222

...

 Not sure I've ever seen an automotive blade-type fuse mount for a circuit board, but they DO make sense and should be cheap if they exist, and the fuses themselves are quite common in many ratings (specifically including 20 and 30 amp).

...

This could be a candidate, trouble is they don't specify the rating of the socket.

The old Bitfury boards used em way back when they needed us to start their farms for them  Roll Eyes

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March 07, 2016, 02:38:16 PM
 #223

pcb mount sockets for ATC/ATO blade fuses, good for 30A http://www.digikey.com/product-detail/en/keystone-electronics/3522/36-3522-ND/228600
General blade fuse clips search there http://www.digikey.com/product-search/en/circuit-protection/fuseholders/655422?k=blade+fuse+holder&pv47=22872&FV=fff4000a%2Cfff8003e&mnonly=0&newproducts=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25

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philipma1957
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March 07, 2016, 02:44:59 PM
 #224


Nice put in a 25 amp blade and safety all around.

Yeah I know the tweakers will want to put in a 30 amp blade but still make spec with that socket.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
chiguireitor
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March 07, 2016, 02:58:03 PM
 #225

This one looks beautiful http://www.digikey.com/product-detail/en/mpd-memory-protection-devices/BK-6010/BK-6010-ND/2330529

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March 07, 2016, 03:31:50 PM
 #226


no voltage or amperage ratings that I can see.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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March 07, 2016, 11:38:32 PM
 #227


Nice put in a 25 amp blade and safety all around.

Yeah I know the tweakers will want to put in a 30 amp blade but still make spec with that socket.

That is also a troubleshooting technique called "smoke testing".
Put in too large of a fuse and see what smokes.
Then replace it.

If the larger fuse still blows, replace with larger fuse and repeat.

 Grin Grin Grin Grin

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.SEMUX
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NotFuzzyWarm
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March 07, 2016, 11:55:52 PM
 #228


Nice put in a 25 amp blade and safety all around.

Yeah I know the tweakers will want to put in a 30 amp blade but still make spec with that socket.

That is also a troubleshooting technique called "smoke testing".
Put in too large of a fuse and see what smokes.
Then replace it.

If the larger fuse still blows, replace with larger fuse and repeat.

 Grin Grin Grin Grin
Nah. Fuses cost money. Just make a jumper and let the PSU or wiring between it and the load be the limiter... Wink

edit: Hmmm, along those lines, has anyone looked to see if the IBM PSU's have an internal adjustment to set the OC limit?

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chiguireitor
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March 08, 2016, 01:13:04 AM
Last edit: January 28, 2017, 01:47:16 PM by chiguireitor
 #229

-removed for privacy-

philipma1957
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March 08, 2016, 04:27:17 AM
 #230


Amps should be 30 not 20.

Stock 25 amp,fuse with 30 amp,fuse as the over clock option.

This would allow 270 to 325 watts per board on max .

Maybe 2.2th to 2.4th max more like

2th.   If you do 2 boards per s-1 shell maybe 4th pulling 440watts.

A lot nicer then the s7 pulling 1449 watts.

Buysolar and I have quite a bit of s-3 and s-1 waiting for bitfury boards.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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March 08, 2016, 08:05:00 AM
 #231

...

 Not sure I've ever seen an automotive blade-type fuse mount for a circuit board, but they DO make sense and should be cheap if they exist, and the fuses themselves are quite common in many ratings (specifically including 20 and 30 amp).

...

This could be a candidate, trouble is they don't specify the rating of the socket.

16 dollars is CRAZY BLOODY EXPENSIVE for a fuse socket/holder.
 Should be able to get a 20-30 amp CIRCUIT BREAKER for not a heck of a lot more than that.

 
Quote

 pcb mount sockets for ATC/ATO blade fuses, good for 30A http://www.digikey.com/product-detail/en/keystone-electronics/3522/36-3522-ND/228600


 MUCH more like it!




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philipma1957
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March 08, 2016, 10:45:33 AM
 #232

...

 Not sure I've ever seen an automotive blade-type fuse mount for a circuit board, but they DO make sense and should be cheap if they exist, and the fuses themselves are quite common in many ratings (specifically including 20 and 30 amp).

...

This could be a candidate, trouble is they don't specify the rating of the socket.

16 dollars is CRAZY BLOODY EXPENSIVE for a fuse socket/holder.
 Should be able to get a 20-30 amp CIRCUIT BREAKER for not a heck of a lot more than that.

 
Quote

 pcb mount sockets for ATC/ATO blade fuses, good for 30A http://www.digikey.com/product-detail/en/keystone-electronics/3522/36-3522-ND/228600


 MUCH more like it!




  84 dollars for 1000   is 17 cents a board  not bad. 

send out with 25 amp fuse and  an option for 30  amp fuse upgrade for overclocking.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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March 08, 2016, 11:21:33 AM
 #233

This could be a candidate, trouble is they don't specify the rating of the socket.


16 dollars is CRAZY BLOODY EXPENSIVE for a fuse socket/holder.
 Should be able to get a 20-30 amp CIRCUIT BREAKER for not a heck of a lot more than that.


price is for 50, so 32 cents each
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March 08, 2016, 09:18:52 PM
 #234

...

 Not sure I've ever seen an automotive blade-type fuse mount for a circuit board, but they DO make sense and should be cheap if they exist, and the fuses themselves are quite common in many ratings (specifically including 20 and 30 amp).

...

This could be a candidate, trouble is they don't specify the rating of the socket.

My favorite surplus-turned-discount electronic -components reseller came up with a few options, but this is the cheapest and one of the more appropriate (not weatherproof or dual fuse)
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March 08, 2016, 09:36:25 PM
 #235

Current rating is too low, we require 25A minimum with 30A (for overclockers) as ideal. Also cartridge fuses ( eg. any AG or SFE) suck at high currents, biggest problem with them is the contact areas on the clips and cartridges, get the slightest bit of oxidation and problems start happening fast.

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March 08, 2016, 10:51:23 PM
 #236

I was in a rush and thought that was a blade fuse! Maybe this one? Their list of current excess (pardon the pun) is here
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March 09, 2016, 12:40:31 AM
 #237

I was in a rush and thought that was a blade fuse! Maybe this one? Their list of current excess (pardon the pun) is here

this one is 2 usd  it is on your list


http://www.allelectronics.com/make-a-store/item/fhp-31/weatherproof-atc-blade-fuse-holder-10-ga-wire/1.html


with a 10 gauge wire and a protective cover it is a great item.  but it is 2 usd

we have a link for bare bones 1000 for 84 bucks  you need two so 17 cents.  I can tell you your item is less work and pretty good quality,

  but 2 usd vs 17 cents  I think   the 17 cents deal would be picked.

now if you found that 2 dollar item for 50 cents  it would be good since it is less work the the 17 cent deal.

and sidehack may still prefer the 17 cent deal .  I have not done as much of this work as he has. he knows a bit more then me.


I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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March 09, 2016, 03:31:22 AM
 #238

I was in a rush and thought that was a blade fuse! Maybe this one? Their list of current excess (pardon the pun) is here

this one is 2 usd  it is on your list


http://www.allelectronics.com/make-a-store/item/fhp-31/weatherproof-atc-blade-fuse-holder-10-ga-wire/1.html


with a 10 gauge wire and a protective cover it is a great item.  but it is 2 usd

we have a link for bare bones 1000 for 84 bucks  you need two so 17 cents.  I can tell you your item is less work and pretty good quality,

  but 2 usd vs 17 cents  I think   the 17 cents deal would be picked.

now if you found that 2 dollar item for 50 cents  it would be good since it is less work the the 17 cent deal.

and sidehack may still prefer the 17 cent deal .  I have not done as much of this work as he has. he knows a bit more then me.



In my electronic tinkerings I've bought stuff from All Electronics.
Really good pricing because they buy overstocks, discontinued items, and production overruns.
As such, a manufacturer of boards might have a concern that spec'ed parts from them may not always be available or available at the current cost.
Beyond price I'd be thinking about the supply chain and all that brings to the table.

Just sayin'

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.SEMUX
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  Semux uses 100% original codebase
  Superfast with 30 seconds instant finality
  Tested 5000 tx per block on open network
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philipma1957
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March 09, 2016, 04:15:47 AM
 #239

I was in a rush and thought that was a blade fuse! Maybe this one? Their list of current excess (pardon the pun) is here

this one is 2 usd  it is on your list


http://www.allelectronics.com/make-a-store/item/fhp-31/weatherproof-atc-blade-fuse-holder-10-ga-wire/1.html


with a 10 gauge wire and a protective cover it is a great item.  but it is 2 usd

we have a link for bare bones 1000 for 84 bucks  you need two so 17 cents.  I can tell you your item is less work and pretty good quality,

  but 2 usd vs 17 cents  I think   the 17 cents deal would be picked.

now if you found that 2 dollar item for 50 cents  it would be good since it is less work the the 17 cent deal.

and sidehack may still prefer the 17 cent deal .  I have not done as much of this work as he has. he knows a bit more then me.



In my electronic tinkerings I've bought stuff from All Electronics.
Really good pricing because they buy overstocks, discontinued items, and production overruns.
As such, a manufacturer of boards might have a concern that spec'ed parts from them may not always be available or available at the current cost.
Beyond price I'd be thinking about the supply chain and all that brings to the table.

Just sayin'


that is also a good point .  lets say for the sake of argument . 500  bitfury boards get built  and that nice looking 2 usd  item is available up to 150 pieces then no more can be had.

even though it is a superior item it may only be 50, 100, 200 of them.

Would be nice to try to source it in bulk at a good  price. 10 gauge  wire can handle 30 amps no sweat.

I see BTC as the super highway and alt coins as taxis and trucks needed to move transactions.
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March 09, 2016, 04:22:56 AM
 #240

Just throwing this out there, but I won't use that part unless I can't find something that was actually designed for board mounting instead of spliced inline on a wiring harness. Heck of a big hassle, not worth talking about.

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