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5VDC @ 50mA max power converted to USB or Oulet??


I have a pair of X31's.A gaming headset that loves to eat batteries
It says its a 5VDC @ 50mA max power source. via 3 AAA batteries
I want to convert this to USB or Power Outlet...
Is this possible?
and If so
What do I need to get the job done. TY for your input

http://www.turtlebeach.com/products/xbox-gaming-headsets/ear-force-x31.aspx?

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orksecurity5 years ago
Looking at the website you pointed to, I think you're misreading the spec.

The _transmitter_ uses 5VDC at 50mA, and is already drawing that from a USB port.

The headset appears to take2 AAA's, not 3 -- which probably means it runs on 2.4 to 3 volts, at some unspecified current. Wired power could still be arranged for it, a bit messily.

BUT: If you run a wire to the headset, that defeats the whole purpose of having a wireless headset, doesn't it? Why not just sell this to a friend and get a wired headset instead?
moxeus (author)  orksecurity5 years ago
I don't mind the messily part. The X31's drain batteries quick due to RF interference forcing the headset to push the system, wasting the batteries.

I like to tinker, and I think it would be a good challenge to turn its power source into something dedicated such as USB or outlet.

Still need answer in regards to how I would go about doing this though. I like to tinker but I don't know what I need to do lol.
Find or build a (presumably) 2.4V to 3V regulated and filtered power supply. Hook it to the two power terminals, making sure not to get it backwards since the circuitry may not be protected against that. (The filtering could be important to keep 60Hz hum from getting into the headphone. If it wasn't designed for external power, it probably won't have its own hum rejection filters.)

We don't know how much power the headset needs. If it's under 100mW, you can power it from USB by regulating the 5V down into the range you need. If it's between 100 and 500, you would need to negotiate power sharing with the USB controller; I haven't checked into the details of that. If more than that, you'd need to either plug into multiple USB ports -- messy -- or give up and go back to using a plug-in power source.

BTW, another approach to reducing the battery cost would be to switch to rechargable batteries. The newer technologies -- NiMH and lithium -- also pack a lot more power in a battery than alkies do, and so would run longer between changes.
PedroDaGr85 years ago
One quick note, it appears the digital transmitter is 5V@50mA. The headphones run on 3AAA batteries so they likely run at around 4.5V. A USB port is capable of providing 5V and 500mA. So you have that much to play with. Unfortunately, we don't know how much power the headphones themselves draw. IF it is under 500mA, you MAY be able to find an adjustable low drop out voltage regulator to serve your purposes.

As for tapping USB: Pin 1 is 5V while Pin 4 is Ground. So if you cut up a cable, you can use it to supply the power.