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Old 17th November 2004, 05:12 AM   #1
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Default Now that's a rectifier...

I wanted to share with the community here the recurring realisation that there are some things where size matters...rectifiers.

I have been popping delicate, little girly men sized 35 and 50amp rectifiers in my car amp test rig, so I decided to step up to the big boys on the block...

These are the smallest in the series, 2 diodes per block.

1200v, 166amp avg @ 100c, 260amps rms, 3500amps surge.

http://www.irf.com/product-info/data...ta/irkd166.pdf

The ruler behind is in inches...

Enjoy

Stuart
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Old 17th November 2004, 01:19 PM   #2
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Default Re: Now that's a rectifier...

Quote:
Originally posted by Stuart Easson
[B] there are some things where size matters...rectifiers.
Definitely
Quote:
Originally posted by Stuart Easson
[B]I have been popping delicate, little girly men sized 35 and 50amp rectifiers in my car amp test rig, so I decided to step up to the big boys on the block...
Hmmm..well, the idea was a good one..
Quote:
Originally posted by Stuart Easson
[B]
These are the smallest in the series, 2 diodes per block.

1200v, 166amp avg @ 100c, 260amps rms, 3500amps surge.
You get me all excited with big rectifier stuff, then you show us girly man product???? Geeze..I gets maybe 100 millisecond outta dat stuff...I keep my blast goggles handy..

Try 7000 amps dc, 29 Kiloamps surge...and deeese is only da 50 and 67 mm diameter product, you should see the 100 mm diameter stuff..

Cheers, John..

PS...yah, Youzes right...that's an F-22...make my day..
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Old 17th November 2004, 02:32 PM   #3
dnsey is offline dnsey  United Kingdom
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How about 0.5MA (that's MEGA Amp) continuous?

http://www.abb.com/rectifiers
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Old 17th November 2004, 02:54 PM   #4
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Yah, but they use the 100 mm stuff..in parallel..

BTW, where does the car fit in?

John
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Old 17th November 2004, 03:53 PM   #5
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Default screws lose?

No, now come on, there's no way for me to attach the cables, how am I supposed to hook those up. I can adjust from solder terminals to screw terminals, but how do I use them discs? Presumably there is some heatsinking involved too, though I am not sure how...

Nope, I'm just gonna have to stick with my, apparently barely adequate, but easy to use, blocks...

I have some 13v/35 amp transformers, collectively they can power any piece of car gear I'm likely to try and fix, hopefully these rectifiers are up to the task, their smaller siblings most certainly were not.

Stuart
PS Bet my rectifiers sound better than your rectifiers, mine ring when dropped...something to do with the 4mm steel base plate they are built on...
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Old 17th November 2004, 04:49 PM   #6
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Default Re: screws lose?

Quote:
Originally posted by Stuart Easson
PS Bet my rectifiers sound better than your rectifiers, mine ring when dropped...something to do with the 4mm steel base plate they are built on...
Hah...mine ring too..AND, they roll....AND, they spin on a flat surface...

The disks are actually the silicon wafer brazed to a disk of molybdenum. They are put into a hockey puck hermetic assembly, and the heatsink assembly compresses the disk, mine to the tune of 9 thousand pounds...for cryogenic use, I had to go to 12,000 lbs, as the tce's redistribute the clamping pressure in a non uniform fashion..


OH, forgot the best part....I can use mine for skeet shooting..

He he,


John
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Old 17th November 2004, 07:37 PM   #7
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Hm, I need to grab some of those for my welder.

(It's AC only output, rated for 230A. I'll grab a few MOT's and spare welding cable for the inductor.)

Tim
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