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"Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
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Re: Power supply build quality pictorial. part 2
Notice that it is the same model with this charger but they are different inside.
They never fail. I don't think they are so bad after all.Comment
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Re: Power supply build quality pictorial. part 2
They may not fail, but these single-transistor self-osc. designs have absolutely no feedback. I guess for a phone, that is okay since the phone does have some high quality internal regulators to charge the battery. Just don't try to use those chargers for anything else that requires a constant, stable voltage.
I'm still surprised Astec would build something like that, though. I have a bunch of old PSUs made by them, and they are all top-notch, high quality inside with all Japanese caps.Comment
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Re: Power supply build quality pictorial. part 2
As far as I can see, the first one mariushm posted doesn't actually say Astec."Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: Power supply build quality pictorial. part 2
FSP FSP-300-60GHS
180uF 420V Teapo LH primary unit.
2200uF 16V OST RLS before +5VSB inductor with 1000uF 16V Suscon HG after it.
2200uF Teapo SZ before and after +3.3V inductor.
1000uF 16V Suscon HG before and after +5V inductor.
1000uF 16V Suscon HG before +12V inductors and on both +12V rails after each inductor.
1000uF 16V Suscon HG for -12V rail.
SDB30A40CT rectifier for +3.3V and +5V rails.
STPS30L45CT rectifier for +12V rail.
GBU606 primary side rectifier.
FSBH0270 IC for +5VSB.
FDP18N50 with BYC5-600 rectifier for PFC stage.
AOTF8N50 x2 for output stage.Attached FilesMy first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.Comment
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Re: Power supply build quality pictorial. part 2
An otherwise nice design let down by trashy capacitors."Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: Power supply build quality pictorial. part 2
Those heat sinks look awfulI love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
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Re: Power supply build quality pictorial. part 2
Yeah, as Fortron increses efficiency, they use smaller and smaller heatsinks.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!Comment
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Re: Power supply build quality pictorial. part 2
yeah, but they are still too small (unless that PSU is 80+ platinum, which I doubt very much)I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
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Re: Power supply build quality pictorial. part 2
That's why, despite general talk, their PSU's aren't really quiet
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!Comment
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Re: Power supply build quality pictorial. part 2
Might look inadequate at first glance but it's really not.
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FSP-300-60GHS is an SFX type and it's 80+.
20% of 300w is only 60w of heat to cool [for the whole supply at 100% load] and due to the reduced casing size the 80mm fan is basically right on the PCB.
That's a lot of air for a little guy..
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Hardware Secrets tested this one and he had to do it at 39C because he couldn't get enough heat out of it to make the test box heat to 45C.
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It looked like a good unit all the way around.
Shame on FSP for the crappy caps though.
.Last edited by PCBONEZ; 02-11-2012, 08:32 AM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
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You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Re: Power supply build quality pictorial. part 2
Here is whats inside a nice AT Compaq PSU. I saved it from getting "recycled". The cover is all messed up with some brown goo...
It's a 150W unit; +5V 18A, +12V 4A, -5V .3A -12V .4A. There was almost no dust inside. I couldn't find out anything about the OEM but it sure has quality all over it. It works fine too.Attached FilesComment
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Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
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You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Comment
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Re: Power supply build quality pictorial. part 2
It says something in the first pic on the right edge of the board
G???EN PO??? (power?) SYSTEMS INC
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Re: Power supply build quality pictorial. part 2
Maybe it's OK with a helicopter grade fan, but my first reaction, just seeing the thumbnails, was, "Where's the beef?!"
The core of the O/P inductor has me curious. A Micrometals -26 core is painted yellow, with one side painted white. It's a very decent GP core, assuming it's sized right, the switch frequency isn't too high, and cooling is decent. A better choice is the -52 material, which, IIRC, is green body with one side blue - lower loss (less heat!), better for higher switch frequencies. That core looks to be black, with writing on it.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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Re: Power supply build quality pictorial. part 2
I really wouldn't like to rip apart that inductor The core is yellow, it's visable at the bottom where windings are less dense.
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Re: Power supply build quality pictorial. part 2
Yeah, those coupled inductors - where most or all the O/Ps have windings on the one core - are not as simple as they seem. The number of turns and wire gauge for each winding, and the order in which the windings are wound are optimized so that the inductor helps with the regulation of the O/Ps that are not part of the main regulator loop. Sounds like the core is Micrometals -26 material, which has been standard for use in P/S since before 1980, when I started working with power supplies.PeteS in CA
Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.
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To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.
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I have wanting to do this project for quite sometime now and I finally found a switching power supply that will work on this desoldering gun station ZD-915 that the original switching power supply took a shit and just was not worth trying to fix it because this switching power is not quite big enough to handle the heater element and the vacuum pump
One note when I tested the switching power supply and the voltage control board I noticed that this desoldering gun heat up much faster than the original switching power supply which I was really surprised by to the point that I might buy... -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
More Lo-Fi speakers and another DIY surround repair. The patient this time: a pair of Philips F9217L-50R speakers from a budget Philips rack/component system from the '80's. The system belongs to my brother in-law… or actually his parents. However, they didn't want it when they moved houses and he liked it anyways, so he ended up keeping it. It's a pretty cool-looking vintage system with a wood/veneer cabinet and shelves for records and cassettes. Unfortunately, I didn't get a chance to take a picture of it or get the model #'s (but maybe next time I visit, if anyone is curious?)
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Boston Acoustics fans, this thread might not be for you.
A few years back (~2018 time frame), I picked up a set of free JVC speakers from someone on Craigslist that no one seemed to be interested in. The guy also had a single Boston Acoustics HD8 speaker – yes, just one cabinet. He said he had no idea where he got this one from or why it's only by itself. But like the JVC speakers, it was going to get tossed at the end of that week… so I came to collect, as usual. And that's all I know about this HD8. After all, I figured why not take it and see what's inside… show it to the...
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