Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Power Supplies and Power Supply Design
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools
Old 06-13-2014, 06:41 AM   #1901
370forlife
Large Marge
 
370forlife's Avatar
 
Join Date: Aug 2008
City & State: Kalamazoo, MI
My Country: United States
Line Voltage: 0-120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 2,924
Default Re: Power supply build quality pictorial. part 2

Quote:
Originally Posted by Agent24 View Post
I'd guess by the PCB silkscreen number 'LCxxxxxx'
Shhhhhhh.
__________________
370forlife is offline   Reply With Quote
Old 06-19-2014, 09:10 PM   #1902
Pentium4
CapXon Be Gone
 
Pentium4's Avatar
 
Join Date: Sep 2011
City & State: Idaho
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hardcore Geek
Posts: 3,216
Default Re: Power supply build quality pictorial. part 2

Imagine how quickly a Hipro would cook JPCON caps...They already roast Teapo caps because of their slow spinning fans and poor efficiency. (Regardless, I love Hipro)

That still looks like a decent PSU.
Pentium4 is offline   Reply With Quote
Old 06-19-2014, 09:35 PM   #1903
Wester547
-
 
Join Date: Nov 2011
City & State: CA.
My Country: USA.
Line Voltage: 120-125VAC 60Hz.
I'm a: Knowledge Seeker
Posts: 1,265
Default Re: Power supply build quality pictorial. part 2

I don't really think Hipros are that inefficient. They are certainly very overbuilt for all that inefficiency, most of the time. They don't run hot enough to cause discoloration, anyway, like select cheapos do. As for slow spinning fans, I have noticed that the 200W-250W models seem to have less assertive fan controllers than the 300-400W models, but that's understandable.
Wester547 is offline   Reply With Quote
Old 06-30-2014, 12:46 PM   #1904
Majestyk
Member
 
Majestyk's Avatar
 
Join Date: Nov 2013
City & State: Frankfurt
My Country: Germany
I'm a: Professional Tech
Posts: 80
Default Re: Power supply build quality pictorial. part 2

I opened one of my old Enermax PSUs today, an
EG365AX-VD
made in 2004.

It was working in a system that operated in a very clean environment so dust has never been an issue for this PSU.
It has been runniung for several years so I was wondering abóut the condition of the components.
Have a look at the pictures. I think this Enermax was built quite well and tidy. (Active PFC wasn´t a must in 2004.)
There´s even a Hitachi HP3 in the primary section and the filtercaps in the secondary section are all "JP CE-TUL", a brand / type often to be foung in Enermax PSUs but I never found a bulged or defective one.
I remember Enermax had a good name back in those days and this PSU seems to be a credit to the species.
Attached Images
File Type: jpg enerxx1.JPG (565.2 KB, 70 views)
File Type: jpg enerxx2.JPG (533.7 KB, 67 views)
File Type: jpg enerxx3.JPG (475.5 KB, 61 views)
File Type: jpg enerxx4.JPG (519.6 KB, 59 views)

Last edited by Majestyk; 06-30-2014 at 12:48 PM..
Majestyk is offline   Reply With Quote
Old 06-30-2014, 01:01 PM   #1905
stj
Great Sage 齊天大聖
 
stj's Avatar
 
Join Date: Dec 2009
City & State: Europe
My Country: some shithole run by Israeli agents
I'm a: Professional Tech
Posts: 26,633
Default Re: Power supply build quality pictorial. part 2

that's a quality design!
i love the way they even sleeve that wire & run it through the sinks instead of just jamming it down the edge!!

a friend has an old "Enermax Bue", i wonder if it's that good inside?
stj is offline   Reply With Quote
Old 06-30-2014, 01:20 PM   #1906
Majestyk
Member
 
Majestyk's Avatar
 
Join Date: Nov 2013
City & State: Frankfurt
My Country: Germany
I'm a: Professional Tech
Posts: 80
Default Re: Power supply build quality pictorial. part 2

I love the classic layout with just one reasonably regulated 80mm fan, ceramic standoffs for components that get hot and proper extruded alloy fins instead of simple cut and bent plates.
Look at the tricky fixation for the little sub-pcb that has a notch fitting right between two fins.
Attached Images
File Type: jpg enerxx5.JPG (254.9 KB, 50 views)
Majestyk is offline   Reply With Quote
Old 07-01-2014, 03:25 AM   #1907
larrymoencurly
Badcaps Veteran
 
larrymoencurly's Avatar
 
Join Date: Oct 2004
Posts: 954
Default Re: Power supply build quality pictorial. part 2

Quote:
Originally Posted by Majestyk View Post
I opened one of my old Enermax PSUs today, an
EG365AX-VD
made in 2004.

...in the primary section and the filtercaps in the secondary section are all "JP CE-TUL", a brand / type often to be foung in Enermax PSUs but I never found a bulged or defective one.
I have the same PSU with the same capacitors, also none bulging. It also has no bleeder resistors in the high voltage section, so even if I unplug it overnight, pressing the power button makes the fan turn slightly.

I had an ECS P4S5A motherboard with JP CE-TUR? capacitors that mostly leaked and bulged.
larrymoencurly is offline   Reply With Quote
Old 07-01-2014, 05:51 AM   #1908
ben7
Capaholic
 
ben7's Avatar
 
Join Date: Jan 2011
City & State: Trenton, NJ
My Country: USA
Line Voltage: 240/120V 60Hz
I'm a: Hardcore Geek
Posts: 3,989
Default Re: Power supply build quality pictorial. part 2

Quote:
Originally Posted by larrymoencurly View Post
I have the same PSU with the same capacitors, also none bulging. It also has no bleeder resistors in the high voltage section, so even if I unplug it overnight, pressing the power button makes the fan turn slightly.

I had an ECS P4S5A motherboard with JP CE-TUR? capacitors that mostly leaked and bulged.
Huh, it should have bleeder resistors, or else the capacitor's may not be sharing the full voltage equally... which would result in one getting too much voltage and failing. I think someone else had that happen on here.
__________________
Muh-soggy-knee
ben7 is offline   Reply With Quote
Old 07-01-2014, 06:12 AM   #1909
kc8adu
Super Moderator
 
kc8adu's Avatar
 
Join Date: Nov 2003
City & State: dayton ohio
My Country: U.S.A!
Line Voltage: 12vdc,120/240vac,480vac 3ph on my bench
I'm a: Professional Tech
Posts: 8,298
Default Re: Power supply build quality pictorial. part 2

not sure how that could happen.
the +5stby section would drain the input caps quickly.
Quote:
Originally Posted by larrymoencurly View Post
I have the same PSU with the same capacitors, also none bulging. It also has no bleeder resistors in the high voltage section, so even if I unplug it overnight, pressing the power button makes the fan turn slightly.

I had an ECS P4S5A motherboard with JP CE-TUR? capacitors that mostly leaked and bulged.
kc8adu is offline   Reply With Quote
Old 07-01-2014, 08:10 AM   #1910
Majestyk
Member
 
Majestyk's Avatar
 
Join Date: Nov 2013
City & State: Frankfurt
My Country: Germany
I'm a: Professional Tech
Posts: 80
Default Re: Power supply build quality pictorial. part 2

The Enermax EG365AX-VD only has one 400V filtercap in the high-pot section so bleeder resistors or varistors aren´t a must.

Only If there are two capacitors in series resistors / varistors are essential to keep the voltages in balance.
Majestyk is offline   Reply With Quote
Old 07-01-2014, 08:57 AM   #1911
Behemot
Badcaps Veteran
 
Behemot's Avatar
 
Join Date: Dec 2009
City & State: Prague, 50°4'52.22"N, 14°23'30.45"E
My Country: CZ
Line Voltage: 230 V/50 Hz
I'm a: Knowledge Seeker
Posts: 4,699
Default Re: Power supply build quality pictorial. part 2

But those are balance resistors, bleeder is for discharging after it is unplugged from the grid, isn't it.
__________________
Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

Exclusive caps, meters and more!
Hardware Insights - power supply reviews and more!
Behemot is offline   Reply With Quote
Old 07-03-2014, 12:46 AM   #1912
Majestyk
Member
 
Majestyk's Avatar
 
Join Date: Nov 2013
City & State: Frankfurt
My Country: Germany
I'm a: Professional Tech
Posts: 80
Default Re: Power supply build quality pictorial. part 2

If there´s a resistor of let´s say 180K in parallel to each of the two capacitors (that operate in series), then these resistors can both balance the DC at each capacitor and discharge it after powering off.
Often there´s an additional varistor (VDR) parallel to each capacitor. The varistors can do the balancing much better and protect the capacitors from operating at too high voltages due to asymmetries but the varistors can´t do the discharging right since they have a high resistance at the lower voltages that occur after powering off.
Majestyk is offline   Reply With Quote
Old 07-04-2014, 10:21 AM   #1913
Majestyk
Member
 
Majestyk's Avatar
 
Join Date: Nov 2013
City & State: Frankfurt
My Country: Germany
I'm a: Professional Tech
Posts: 80
Default Re: Power supply build quality pictorial. part 2

Speaking of build quality...

I opened a Delta Server PSU today, that is a couple of years old but still unused. It is constructed as a sandwich with one board at the top and another at the bottom. The air for cooling passes right through the middle.
As you would expect from Delta, the components are of excellent quality and only Tier1 suppliers! Strictly Nichicon and Rubycon capacitors, heavy alloy cooling blocks, loads of coils and toroids, a proper shielded filter for the mains connection... See for yourselves and imagine a world where all PSUs are built this way:
Attached Images
File Type: jpg delta11.JPG (553.6 KB, 73 views)
File Type: jpg delta12.JPG (483.7 KB, 74 views)
File Type: jpg delta13.JPG (571.1 KB, 63 views)
File Type: jpg delta14.JPG (597.2 KB, 63 views)
File Type: jpg delta15.JPG (635.2 KB, 67 views)
File Type: jpg delta16.JPG (590.6 KB, 52 views)
File Type: jpg delta17.JPG (512.2 KB, 45 views)
Majestyk is offline   Reply With Quote
Old 07-04-2014, 11:28 AM   #1914
PeteS in CA
Badcaps Veteran
 
PeteS in CA's Avatar
 
Join Date: Aug 2005
City & State: San Jose, CA
My Country: USA, Unsure of Planet
Line Voltage: 120VAC, 60Hz & 115VAC, 400Hz
I'm a: Professional Tech
Posts: 3,384
Default Re: Power supply build quality pictorial. part 2

As Mrs. S in CA would call it, that really is beautiful power supply "porn". Looks like late 2008 build.
__________________
PeteS in CA

Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
****************************
To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
****************************
Anti-Covid-Vaxxer pig crap claim/prediction, Doctor: Heart Failure from mRNA Jabs "Will Kill Most People" | Principia Scientific Intl. ; Dr. Geert Vanden Bossche Warns COVID-19 Jab Injuries and Deaths Will Soon "Collapse Our Health System" (VIDEO) ; Fully Vaxxed May 2021; Since that time I've done 7 5Ks, 1 8K, 8 10Ks, and 4 half marathons
PeteS in CA is offline   Reply With Quote
Old 07-07-2014, 01:11 AM   #1915
larrymoencurly
Badcaps Veteran
 
larrymoencurly's Avatar
 
Join Date: Oct 2004
Posts: 954
Default Re: Power supply build quality pictorial. part 2

Quote:
Originally Posted by Majestyk View Post
The Enermax EG365AX-VD only has one 400V filtercap in the high-pot section so bleeder resistors or varistors aren´t a must.

Only If there are two capacitors in series resistors / varistors are essential to keep the voltages in balance.
It turns out I have a different PSU, a EG-365P-VD, and I can't find any bleeders for the big 680uF, 220V caps in it.
larrymoencurly is offline   Reply With Quote
Old 07-07-2014, 10:05 AM   #1916
Majestyk
Member
 
Majestyk's Avatar
 
Join Date: Nov 2013
City & State: Frankfurt
My Country: Germany
I'm a: Professional Tech
Posts: 80
Default Re: Power supply build quality pictorial. part 2

That´s quite strange.

If you have two primary capacitors with 680µF each and they operate in series then you need some resistors and / or VDRs in parallel to each capacitor to hold the DC balance "in the middle" if the two caps get unmatched due to aging. Otherwise one of the caps could operate at 260V the other one at 180V for instance. That would be a problem since they are rated for 220V.

Maybe there are two varistors hidden somewhere?
Majestyk is offline   Reply With Quote
Old 07-07-2014, 04:38 PM   #1917
Behemot
Badcaps Veteran
 
Behemot's Avatar
 
Join Date: Dec 2009
City & State: Prague, 50°4'52.22"N, 14°23'30.45"E
My Country: CZ
Line Voltage: 230 V/50 Hz
I'm a: Knowledge Seeker
Posts: 4,699
Default Re: Power supply build quality pictorial. part 2

Quote:
Originally Posted by Stefan Payne View Post
Here something you could get for 14,95€ in Germany right now...
Finally got 50 of them, review comi'n up.
Behemot is offline   Reply With Quote
Old 07-07-2014, 06:06 PM   #1918
RJARRRPCGP
Badcaps Veteran
 
Join Date: Jul 2004
City & State: North Springfield, Vermont
My Country: USA
Line Voltage: 118-127V 59-63.5 Hz-> actualizo: pérdido de voltaje
I'm a: Knowledge Seeker
Posts: 6,039
Default Re: Power supply build quality pictorial. part 2

Quote:
Originally Posted by Pentium4 View Post
Imagine how quickly a Hipro would cook JPCON caps...They already roast Teapo caps because of their slow spinning fans and poor efficiency. (Regardless, I love Hipro)
Sounds like the SmartPower series! Where apparently, the fan controller for one of the fans, is prone to failing.
It's a suspect in the bulged Fuhjyyu cap case! (in my 2005 Antec SmartPower 2.0 500W PSU) It's a shame, Antec!
(not to get confused with that early-1990s Kris Kross song, which I got in my head now, LOL!) ("It's a shame!")
__________________
ASRock B550 PG Velocita

Ryzen 5 "Vermeer" 5600X

32 GB G.Skill Trident Z Neo F4-3600C18D-32GTZN

Sapphire Nitro+ Radeon RX 6600 XT

eVGA Supernova G3 750W

Western Digital Black SN850 1TB NVMe SSD




"¡Me encanta "Me Encanta o Enlistarlo con Hilary Farr"!" -mí mismo

"There's nothing more unattractive than a chick smoking a cigarette" -Topcat

"Today's lesson in pissivity comes in the form of a ziplock baggie full of GPU extension brackets & hardware that for the last ~3 years have been on my bench, always in my way, getting moved around constantly....and yesterday I found myself in need of them....and the bastards are now nowhere to be found! Motherfracker!!" -Topcat

"did I see a chair fly? I think I did! Time for popcorn!" -ratdude747

Last edited by RJARRRPCGP; 07-07-2014 at 06:10 PM..
RJARRRPCGP is offline   Reply With Quote
Old 07-14-2014, 06:23 PM   #1919
Behemot
Badcaps Veteran
 
Behemot's Avatar
 
Join Date: Dec 2009
City & State: Prague, 50°4'52.22"N, 14°23'30.45"E
My Country: CZ
Line Voltage: 230 V/50 Hz
I'm a: Knowledge Seeker
Posts: 4,699
Default Re: Power supply build quality pictorial. part 2

Quote:
Originally Posted by Behemot View Post
Finally got 50 of them, review comi'n up.
http://diit.cz/clanek/delta-electron...b-recenze-test

Final resolution: 100,5 % (it's actually not 0-100 but the mathematical ℝ set). Lowest ripple I have seen EVER, great voltage regulation, great efficiency from 100 W up, great overload, nothing but japanese caps.

Last edited by Behemot; 07-14-2014 at 06:26 PM..
Behemot is offline   Reply With Quote
Old 07-14-2014, 06:37 PM   #1920
Pentium4
CapXon Be Gone
 
Pentium4's Avatar
 
Join Date: Sep 2011
City & State: Idaho
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hardcore Geek
Posts: 3,216
Default Re: Power supply build quality pictorial. part 2

You're right. Wow, that ripple suppression is phenomenal. Interesting though the way it raises and lowers with the load. Good review Behemot
Pentium4 is offline   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums © 2003 - 2022
Powered by vBulletin ®
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 09:45 AM.
Did you find this forum helpful?