I've been using a pair of wireless headphones for some years now and the batteries are pretty much near the end of their life span, so what's the problem?
The problem are the batteries. Philips wants you to use their recharcheable batteries. What happens if you use other batteries? You get a perfomance drop; shorter battery life and an extremely reduced charge rate when placed in the base.
What makes their batteries special? Nothing much really, the only difference is that the batteries have an area near the negative terminal that is not insulated like the rest of the battery.
This terminal simply bypasses the reversed diode (zener? I didn't check) reducing the voltage drop on one of the batteries and I'm pretty sure that on the PCB there is another diode/zener for the other battery (why not just hot glue it like the other one? I didn't bother checking).
Here you can see the "special" terminal that conects to the battery case (anode) to bypass the diode.
This is how the battery interfaces with the contact terminal. Oh, look! A warning label!
And here you can see the complicated solucion to this problem, a pair of wires to permanently bypass the extra circuitry. Of course, this could also be a protection measument if you decide to use non-rechargeable batteries, but as I never place the headphones in the base when I'm using normal batteries because... well they're not rechargeable!
Hope someone finds this usefull! Happy hacking!
Showing posts with label Hobby. Show all posts
Showing posts with label Hobby. Show all posts
Saturday, March 26, 2011
Philips SBC HC8545 headphones
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OiD
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Labels: DIY, Electronics, Hack., Hobby, Philips
Friday, September 28, 2007
My figures... more to come hopefully :3
I finally got around to taking individual pictures of my collection! Here is what is on my shelf currently.

I tried to take some decent pictures, I think they came out okay. Here is the setup I made, not much, but its better than flash photography.
Mai Tokiha; From Mai Hime, currently my largest figure. A very nice figure by MaxFactory.

Mai Tokiha
Looks very nice, the base is wide but it is very easy to knock her forwards.
Rei Ayanami; From Evangelion, this is a rendition by Poyoyon Rock. An adorable Rei made by Sega.

Rei Ayanami
Asuka Langley; Second part of the set by Poyoyon. The cute looking Asuka has Poyo's mark, witch is a bandage.

Asuka Langley
Both of these figures where given to my from my girlfriend, go visit Patri too!
Lumire; From Kiddy Grade, a series very much enjoyed. No, she is not an underage alcoholic, just underage.

Eclair
Very nice quality/price, I really like Lumiere's texture but taking pictures of Eclair is a nightmare. The bases are my favorite and I have no other that attach so well to their base.
Temari; Naruto. Watched up until the fillers, and stopped. Always liked Temari :3 A Bandai product, you can change the arm and the fan for a diferent pose. Neat.

Temari
One of my leaning figures, she seems okay after being boxed a while.
Ino; Naruto. Why is she in a swimsuit? I don't know. But I'm not complaining.

Ino
I dont know much about this figure, it had no box when I bought it. The beach ball is nice.
Saber; Fate Hollow/Ataraxia. Not from the series but the game. Comes with an Ice crusher and a deformed mini Saber. Cute isn't she?

Saber
Made by Alter. Oh yeah, that string is to stop her from leaning again. The rear pin her right foot broke, so she started leaning forwards, temporarily solved with a screw in her foot... still leaning. Did the hot water trick, went to far first try and ended up leaning backwards, she seems fine now.
Anna Kurauchi; From He is My master. I think this was my first anime with maids. The madly in love Anna acting inocent.

Anna Kurauchi
Another present from Patri! She's too kind ^_^ Made by Toy Pla.
Hakuoro; Utawarerumono. Or Uta or Utaware... The ONLY male in my collection, well' guess he doesn't feel lonely. One of my most favorite series.

Yuzuha
Kamyu is my favorite. Made by Kotobukiya, the quality is okay I guess. Missing Urutori!! Trades are welcome!
Bazzet Fraga McRemitz; Fate Hollow/Ataraxia. I Wanted Kaleido-Ruby!!
Bazzet Fraga McRemitz; Fate Hollow/Ataraxia. I Wanted Kaleido-Ruby!!

Bazzet Fraga McRemitz
Alter product.
Chii; Chobits. One of my first anime's. Another box less figure. Old, discolored, bad paint, cheap.
Chii; Chobits. One of my first anime's. Another box less figure. Old, discolored, bad paint, cheap.

Tira
Did I mention box less?
Ryomou Shimei; Ikkitousen. Meido! The first figure I bought. Found at a french shop in a convention at 1/2 price, the pink version whas also available. I'm leaching the manga from a friend. Aaah, conventions, one coming up this october!

Ryomou Shimei
Soon to be 1 year old :3 Slightly leans backward, so I'm using a metal bar to stop her leaning. Summer is cruel. Made by ¡StoryImageFigure!
Felicia; Darkstalkers. Small, cute and portable! Made by Capcom.

Felicia
Falls backwards after a while, so she is on Gothic Lolita Ryomou Shimei's base, Ryo is in my car :D

Mao
Box less! Easiest figure to knock over.
Motoko; Ghost in The Shell. I thought she was a key chain...

Motoko
Here is the rest of figures, okay I got lazy! The first Four are from Love Hina, I only remember Kitsune, they were given to me at a convention and spent a year in a box.
The last one is Ropponmatsu from Excel Saga made by ¡StoryImageFigure! and is a pain to move.

Kitsune, Roppnmatsu and Company
Mini Saber; Came along with Swimsuit Saber by Alter. Always on the move.

Mini Saber
VERY tempted to turn her into a key chain.
Here is my tripod, as you can see, it needed a bit of McGyver's touch. Paper clips are use full, even the iPhone has an oficcial paper clip.
Posted by
OiD
at
7:31 PM
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Labels: Anime, DIY, Figure, Hobby, Photography
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