Please always attach files to posts instead of hosting them somewhere else. This way they can’t get deleted.
Well, the original files were 3MB and 2MB is the limit, so…. Only solution I did see.
Here they are downloaded from IMGshack and uploaded here again though!
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Oh, I see. Well, since I recently upgraded to 10 gigs of webspace, of which 7 are currently unused, I guess the file limit can be set higher. 🙂
The photos would be more useful if they showed the actual traces on the other side of the board, but it’s the thought that counts 😉
Well, here it is! Happy anniversary PVB!!! I hope it is useful for someone.
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e5frog wrote:
It looks like that small thing on the left is an isolating transformer?
I am not that technical to be honest, I hope someone with the knowhow will chime in 😉
e5frog wrote:
It looks like that small thing on the left is an isolating transformer?
No… I think it’s just an inductor. It wouldn’t do any good to have a transformer on it, since it’s all DC (and it doesn’t do any conversion at all).
DogP
My bad, I thought the diode was there to half-wave-rectify (or whatever it’s called in English) AC voltage – but I guess it’s just there for protection, as the resistor is there for current limiting. What does the inductor do?
Well, I just got my Japanese version in and that diode reads 5 R while the US version has a 1 R diode in it. And to my surprise (again, I am not that good with more technical stuff) the Japanese version works with my European AC adapter, while the US tap only works with a DC adapter.
P.S.
Can someone PLEASE 😛 tell me if adaptor or adapter is the proper word in English?!
e5frog wrote:
5R or 1R sounds more like the value of the resistor… (5 ohm and 1 ohm)
Yeah, I agree there, but it says that on the diode and I am no expert on diodes lol!
Can someone PLEASE 😛 tell me if adaptor or adapter is the proper word in English?!
I think both are fine… I think US usually uses adapter, and UK usually uses adaptor, but I could be wrong on that. I use adapter.
And I assume the inductor is just a choke to filter out AC on the input.
DogP
e5frog wrote:
It looks like that small thing on the left is an isolating transformer?
DogP wrote:
No… I think it’s just an inductor.
I think you’re both right. I don’t have one to test, but from the circuit, it looks like a transformer being used as a pair of inductors. I think the same thing is used in the SNES (which makes sense, since the tap uses an SNES wall-wart).
I haven’t been able to find anything that explains what’s going on or how it works, but it may be acting like a kind of balun and/or a pair of AC chokes like DogP said.
The diode is, of course, for polarity protection, and the resistor is like e5frog said; current limiting, as well as possibly acting like a fuse.
Also, my Performance VB power supply uses “adaptor” on its label, but the spell-checker in Opera flags that and suggests “adapter”, so I think DogP’s assessment is correct.