How does this look? It is an inexpensive Chinese unit, rated for 240W continuous. Usable?
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Re: Bubalus PP345EAA (240W continuous)
It will probably do its rated power, but unfortunately provides only 15A combined power for 12V. It could be used in a Pentium 3 or AMD (before Athlon 64) system or a not energy demanding P4 / Core 2 PC. -
Re: Bubalus PP345EAA (240W continuous)
It will run Fine upto Pentium 4 Without AGP or PCI_E and Internal TV Tuner . But not suitable for Dual Core .Comment
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Last edited by RJARRRPCGP; 02-09-2014, 07:04 AM.ASRock B550 PG Velocita
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Re: Bubalus PP345EAA (240W continuous)
It depends heavily on the bulk storage, the primary silicon, and the secondary silicon. Those heatsinks and that EI-33 transformer don't look great, and neither does that passive PFC mounted to the primary side as it blocks airflow to that area (I think the +5V/+12V toroid could look better as well). I would call it a 200W unit safely. It looks like it uses a two transistor +5VSB circuit, also...Comment
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Re: Bubalus PP345EAA (240W continuous)
The heatsinks are actually pretty good for 250W. I have seen units do 300W with thinner heatsinks than those.
The EL-33 main trafo is absolutely capable of 250W.
We are talking about 250W here. Not 350W.Comment
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Re: Bubalus PP345EAA (240W continuous)
One thing to remember also, is that when the fan is wired directly to the 12V, these things do surprisingly well since they usually move a lot of air. If the silicon is good enough I bet it could do over 250W no problem (Especially is the OP is on 230V). Nice to see it even has PI filters because a lot of units can do 250W with ripple in spec with two caps per rail and no coil, although I always prefer they use a coil.Comment
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Re: Bubalus PP345EAA (240W continuous)
Introducing the little brother of the Chinese generic unit PP345EAA: the PP330EDA. Is lighter on the input filtering (only one coil) as well as output filtering (no pi filter coils and smaller caps). Can this unit safely deliver its claimed ratings (only 10W on 12V rail) with ripple in spec? Appreciate any thoughts.Attached FilesComment
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Re: Bubalus PP345EAA (240W continuous)
The ripple would be barely in spec.Comment
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Re: Bubalus PP345EAA (240W continuous)
First one will work much better if you will clean it! Also take fan apart, clean it, and oil it.Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)Comment
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Re: Bubalus PP345EAA (240W continuous)
Like goodpsusearch, I would say that if it does, it would be barely in spec. Probably not good for your motherboard and hard drives in the long term. Not unless you add the missing caps and coils. I also suggest checking the part number on the 12V rectifier, though, and post it here. If it really is a 10A rectifier, then you could probably run a very low end Core 2 Duo or Pentium Dual core that is rated for less than 60W TDP (check your CPU model with CPU-world.com to see how many Watts TDP it is rated for).
As for the first PSU you posted way back - that one appears more capable. Again, it depends on what rectifier uses for the 12V rail... but if it's 16A or higher, you can probably run up to a 80W TDP CPU and mid-end graphics card around 50W TDP (i.e. GeForce 7600, 8600, 9600, or ATI X1650, X2600, etc.).Last edited by momaka; 07-03-2014, 02:04 PM.Comment
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I think this has been answered but I couldn't find the thread.
Someone asked me if it would harm a capacitor (10F [not a typo], 24v) if it was operated on nothing more than 12v.
So, I ask... Does it change any of the capacitor's characteristics/parameters/? in any way if it is never operated near rated voltage?
If operated for years at 1/2 rated voltage, does it accept full rated voltage like it would if it had always been operated at the higher voltage?
Or would it require reforming? -
Hi
Just a quick question - is it ok to use ‘audio' rated caps on a non audio device.
Is there any reasons why they shouldn't be used?
I'm just trying to find some good quality caps on ebay for a small repair and I've noticed there are alot of audo rated caps in the size i need but not so many non audio rated.
If I can't find any Panasonic what would be any other good makes to consider?
Thanks 🙂 -
Hello everyone,
I'm working on repairing a Music Store Professional GO! SUB 18A bass subwoofer, and I need some help troubleshooting an issue with the power amplifier board. The board uses an IR2153 driver and originally had two SLW20N50C MOSFETs. Unfortunately, these MOSFETs burned out. I replaced them with two TK20J60W MOSFETs; however, these also failed almost immediately.
Here are some details:- SLW20N50C (original):
- Rated for 500 V
- Typical RDS(ON): 0.21 Ω
- Continuous Drain Current: 20 A at 25°C (13 A at 100°C)
- Pulsed Drain Current: 80 A
- Avalanche
- SLW20N50C (original):
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Hello all, I have a Dell Latitude 5420, before I upload the bios I thought I would ask. All I am getting is are coloured screens from one colure to another continuous that's all its doing.
I have searched on google some say this is a graphics problem and not a bios problem. I did try another bios file from the forum it stops at the Dell logo.
With the original chip fitted I am getting error code 3 amber and 3 white flashes.
Any advice please ?.09-02-2024, 03:43 AM -
Hi guys.
I wonder if this tablet is usable in near future?
I wonder how come I don't see yet artifacts of a broken screen (vertical lines)?
It's a Tab S4.
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