the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
icon

dual rectifier alternator


Post ReplyPost New Topic
< Prev Topic Next Topic >
still_walkin 
Silver - Posts: 644
Silver spacespace
Joined: April 18, 2007
Location: California, United States
Posted: May 01, 2012 at 4:49 AM / IP Logged  

i saw these online and i was looking for reviews on what people thought about them and couldnt find nothing . so my question go with this type of alternator or a HO alternator

http://store.alternatorparts.com/cs144-series-dual-rectifier-alternators.aspx

1993 sdv
Alpine 4x6 6x9 5 1/4 swr-10d4
alpine v60
12.5 VGA flip down
Nettop pc w/10" touch screen
78nova
5-re audio 5x7 ,10" sub &
Xtx-500.5
"Take the faceplate off get the jumperpack"
DYohn 
Moderator - Posts: 10,740
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: May 01, 2012 at 9:08 AM / IP Logged  
Those look like HO alts to me...
Support the12volt.com
still_walkin 
Silver - Posts: 644
Silver spacespace
Joined: April 18, 2007
Location: California, United States
Posted: May 01, 2012 at 9:14 AM / IP Logged  
Right but the ones I dealt with only have one set of rectifers and they are inside the alts casing .is there any difference to the salts output with a dual set of rectifiers bridged
1993 sdv
Alpine 4x6 6x9 5 1/4 swr-10d4
alpine v60
12.5 VGA flip down
Nettop pc w/10" touch screen
78nova
5-re audio 5x7 ,10" sub &
Xtx-500.5
"Take the faceplate off get the jumperpack"
DYohn 
Moderator - Posts: 10,740
Moderator spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: April 22, 2003
Location: Arizona, United States
Posted: May 01, 2012 at 10:00 AM / IP Logged  
No idea, never used one that I klnow of, but the theory is good.
Support the12volt.com
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: May 02, 2012 at 11:28 PM / IP Logged  
Apparently the diodes are the major source of failure in HO alternators.
In my experience with normal alternators, the main diodes are not a problem - except for foray with Bosch which blew after jump starting and also just running a flat battery (ie, same effect as "after" a jump start).
If high capacity diodes are difficult or expensive to get with HO alternators, I can see why 2 sets of cheaper or available diodes are used.
Whether they are needed or not is another issue. (What is their replacement cost? Is an easy to replace single-diode set an option? Etc.)
still_walkin 
Silver - Posts: 644
Silver spacespace
Joined: April 18, 2007
Location: California, United States
Posted: May 03, 2012 at 12:53 AM / IP Logged  
In other words two sets of cheap diodes are better than one.
1993 sdv
Alpine 4x6 6x9 5 1/4 swr-10d4
alpine v60
12.5 VGA flip down
Nettop pc w/10" touch screen
78nova
5-re audio 5x7 ,10" sub &
Xtx-500.5
"Take the faceplate off get the jumperpack"
oldspark 
Gold - Posts: 4,913
Gold spacespace
Joined: November 03, 2008
Location: Australia
Posted: May 03, 2012 at 2:49 AM / IP Logged  
I did NOT say that.
still_walkin 
Silver - Posts: 644
Silver spacespace
Joined: April 18, 2007
Location: California, United States
Posted: May 03, 2012 at 4:35 AM / IP Logged  
So is it worth the buy or stick with the regular hi output alts
1993 sdv
Alpine 4x6 6x9 5 1/4 swr-10d4
alpine v60
12.5 VGA flip down
Nettop pc w/10" touch screen
78nova
5-re audio 5x7 ,10" sub &
Xtx-500.5
"Take the faceplate off get the jumperpack"
haemphyst 
Platinum - Posts: 5,053
Platinum spaceThis member has been recognized as an authority in Electrical Theory. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spacespace
Joined: January 19, 2003
Location: Michigan, Bouvet Island
Posted: May 07, 2012 at 9:31 AM / IP Logged  
They're probably the same diodes, just pressed into a second heat-sink, and attatched to the outside of the alternator case.
IF those photos are accurate, then the bridge attached to the outside looks exactly like every internal bridge I've ever seen - my guess is it's just a paralleled set, clamped to the outside. Paralleling a second set of diodes simply reduces the stress that a single set would see, in theory improving the life-span of any given diode.
Depending on how they're clamped to the outside, I can see that the external bridge set looks like it actually interferes with air flow for the internal set, thus offsetting any claimed stress gains.
I can't see any gain, really... A gain in one direction, with a corresponding loss in the other. Not worth it, AFAIAC. The prices do look a little more reasonable than a comparable HO alternator with a single internal bridge, though...
It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Sorry, you can NOT post a reply.
This topic is closed.

  Printable version Printable version Post ReplyPost New Topic
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot delete your posts in this forum
You cannot edit your posts in this forum
You cannot create polls in this forum
You cannot vote in polls in this forum

  •  
Search the12volt.com
Follow the12volt.com Follow the12volt.com on Facebook
Wednesday, December 7, 2022 • Copyright © 1999-2022 the12volt.com, All Rights Reserved Privacy Policy & Use of Cookies
Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.

Secured by Sectigo
the12volt.com spacer
the12volt.com spacer
the12volt.com spacer
Support the12volt.com
Top
the12volt.com spacer
the12volt.com spacer