Passive PFC - The HongKongFlyApart way
IMO, this is just as bad (but funny) as kc8's echo star with dummy weights. It's from an "AOBAMA" branded unit, the OEM of which has to be HongKongFlyApart Company (R) LLC. Enjoy 
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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
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Re: Passive PFC - The HongKongFlyApart way
Wow, it has two y caps. They went all out on this one didnt they? -
Re: Passive PFC - The HongKongFlyApart way
it's the presidental edition!
epic fail... only other 2 dummy weight psu's mentioed on BCN:
1. KC's echo star
2. fake dell PA-10 (referenced from another forum)
but at least those 2 did something, even though not performing up to spec. this, well, is 100% useless.sigpic
(Insert witty quote here)Comment
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Re: Passive PFC - The HongKongFlyApart way
http://4hv.org/e107_plugins/forum/fo...ic.php?77658.0
http://www.cloudfrom.com:8080/showIt.../10680033.html
You're not the first to notice this...Comment
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Re: Passive PFC - The HongKongFlyApart way
I've never owned a PSU with an external choke like that. I've only seen them in PSUs designed for the European market.
Some stricter regulations for suppressing line noise maybe?
I knew that transformer was fake before you even opened it the external tape on the transformer was too far forward.
Check this out for more details on this deceiving practice:
The insides of an external choke on a cheap supply. Guess copper wasn't in the budget!
http://*************/photo/my-images/160/img2319.jpg/
Check these PSUs they're even worse:
They just jammed a few pieces of iron together into the bobbin to make it feel heavy enough to be real. Another manufacturer filled the bobbin with ground up iron filings and taped it up. Great way to get rid of manufacturing waste don't you think
? Another just glued the plastic bobbin to the underside of the PSU case without an E core and you guessed it more iron plates for weight. Some manufacturers have gone high tech and molded a solid piece of iron that fits into the bobbin instead of individual iron plates!
All of course have a continuous loop of insulated dummy wire to make it look legit from the outside.
http://www.cloudfrom.com:8080/showIt.../10680033.html
Bad caps are bad enough but as consumers from other countries keep buying this disposable Chinese crap they get more and more ballsy like this. It pisses me off to no end!
At least you can tell when you'll find these fake coils because they are usually accompanied by Hong Kong Flyapart (gutless wonder) built quality an undersized discrete line rectifier, undersized paper thin heatsinks, undersized switching and secondary rectification components, etc.Last edited by Krankshaft; 07-31-2011, 01:36 AM.Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: Passive PFC - The HongKongFlyApart way
The external coil is supposed to be for passive PFC which uses a large transformer like that.
Since many markets require at least passive PFC now and all these people can seem to put together are the same 2 decade old designs; it seems they have started to fake PFC.Comment
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Re: Passive PFC - The HongKongFlyApart way
I have plenty of passive PFC supplies here and all have onboard chokes not a single external one to be found.
Still don't get why they're commonplace in Europe and not in the US.Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: Passive PFC - The HongKongFlyApart way
If it has a onboard choke it is probably Active PFC.
Comment
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Re: Passive PFC - The HongKongFlyApart way
Nope two filter caps and a manual autorange switch so passive PFC.
I think I only have one active PFC power supply in the whole house my PSUs are ancient.
Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: Passive PFC - The HongKongFlyApart way
Thats strange. Never seen PPFC with a onboard choke. Do you have pictures of it?Comment
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Re: Passive PFC - The HongKongFlyApart way
Try every PSU I have here is a link to my Antec Smartpower:
Check out the third pic that's the input. A pretty common sight on a PSU that isn't a gutless wonder. An onboard choke and inductors only no external e coil choke.
https://www.badcaps.net/forum/showthread.php?t=4956
Check post 8 for another pic.
I've never seen one in any passive PFC supply I've opened.
I have seen them constantly in pics on supplies marketed for 220 volts though.
I'm thinking stricter regulations for line noise in the EU requires a bigger choke.Last edited by Krankshaft; 07-31-2011, 09:21 AM.Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: Passive PFC - The HongKongFlyApart way
That choke you have there in your Antec isn't a passive PFC choke, it's just a component of the EMI filter.A working TV? How boring!Originally posted by PeteS in CAComment
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Re: Passive PFC - The HongKongFlyApart way
That is strange. Hmm. Yeah every ppfc psu I have has a big inductor bolted to the case including a few deltas.Comment
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Re: Passive PFC - The HongKongFlyApart way
There's a header on the board for that blue wire, but is that header connected to anything?Comment
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Re: Passive PFC - The HongKongFlyApart way
I stand corrected that PSU doesn't have Passive PFC. That is the EMI filter
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I figured a mid range PSU that wasn't cheap mind you bought in 2006 would have it.Last edited by Krankshaft; 07-31-2011, 12:27 PM.Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: Passive PFC - The HongKongFlyApart way
I don't see why the traces for the PFC choke wouldn't be there they have to sell the scam after all.
That blue wire enters the dummy PFC bobbin loops around and comes back out
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Just to trick the casual observer so it appears to meet the EU requirement and has some form of PFC.
One plug into a Kill A Watt set to the PFC function would expose it though.Last edited by Krankshaft; 07-31-2011, 12:30 PM.Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: Passive PFC - The HongKongFlyApart way
No, I mean the header on the PC board. Is there any circuitry actually connected to that? Is it just not connected, or both pins tied to ground, or what?Comment
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Re: Passive PFC - The HongKongFlyApart way
The EU should really test samples at random to check the PFC readings.. then they'd find the fakery.Comment
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Re: Passive PFC - The HongKongFlyApart way
LOL @ 2009 "Obama" PSU!ASRock B550 PG Velocita
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Re: Passive PFC - The HongKongFlyApart way
This is going too far, what would be the next thing?? a PSU case without any circuitry with a piece of lead to make it heavier??Comment
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Hello.
I ordered two NCP303150 for Lenovo 15 for GPU power phases. When i installed it it not work and i see that they have markings DUMMY on it. it is really dummy/fake/ ? ordered from SUHMS... -
Hi All,
I'm looking at upgrading my load resistors for power amplifier diagnostics and have a few questions:
1. is it possible to use e.g. a kettle element as a load?
and at the other end of the financial spectrum..
2. Electronic loads - would they work?
3. What's the gold standard method?
Many thanks. -
Hi
I am busy repairing a Garmin Echo 101 device that has a blown IC.
The only information on the IC is IV7DF. (See attached foto)
I am not able to find this component or any replacement.
Are you perhaps able to assist me to identify the component or a possible replacement?
Regards
Spidey... -
So I want to swap another PSU into this unique case that has had the original guts fail. The PSU case was designed for a PPFC coil, so I'd like to incorporate it into the drop in.
So I really can't remember. Can't you just drop in the PPFC coil? Most PCBs are labeled for them but I really can't remember. There isn't any circuitry that needs to be added? The one in question has a polypropylene capacitor attached to it:
Would I just install this where the circled jumper is?
How much does the coil improve the PFC %, realistically?... -
I'm planning to remove and bypass the passive PFC transformer/coil on an ATX power supply.
I don't care about reduced efficiency. I'm worried, howewer, about any problem in terms of increased ripple in the primary rail.
Does the removal of the passive PFC has negligible downsides in terms of increased ripple?
Thank you.
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