Tapping a Molex

[madd0ct0r]

Ok, I'm trying to power some speakers off the internal wires.



They want 10V DC at 500MA, 50Hz

Apart from assuming i meant to write milliamp on the reminder note, does anyone have any suggestions?

the 5V (red wire right?) on the molex seems to hint at me, but I can't see how to get a consistent current with the varying demands of the computer.

The other bit of wire seemingly spare is a 4 wire square socket used for converting a 12pin motherboard power wire into a 14pin one.

The four wires going into it are black orange yellow and red if it's anyhelp. I can't get a good reading off them with my dodgy multimeter - everything goes off the scale.

[Spawn-Inc]

with a molex there are 4 wires, 12v, ground, ground, 5v. yellow, black, black, red.

the current will vary depending on load normally, you cannot control the current accept for the max, which will be listed on the psu.

not sure what 12pin connector your are talking about, pics?

[hiroman_77]

Spawn-Inc made a small mistake. A molex contains 12v, ground, ground, and 5v. Since the input you are looking for is 10v at 500 ma, the only thing I can think of is to find a compatible car cigarette lighter adaptor that you can modify, since the cigarette lighter outputs 12v DC, you may be able to mod it to attach to the 12v and ground from a molex connector. Best of luck.

[Spawn-Inc]

lol, oops that was a type, my finger was still on the 4 from the first one. edited.

[nevermind1534]

I'd tap that.

[madd0ct0r]

facepalm.

Are molex's AC then? never thought to check.
I'm looking at possibly just buying the same speakers again to get the transformer, and running both sets of speakers off it.


digging on google produced this extremly dubious idea:

"
Here's the easiest solution:

Use the 12VDC output, and put 3 diodes in series with the output. This will drop the 12V down to 10, and give you the voltage you need.

The power draw from an iPod is not great, so almost any common silicon diodes will do just fine."

[Spawn-Inc]

there is no ac power leaving a psu. it's all dc.