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Author Topic: Power output of a headphone jack?  (Read 832 times)

  • Offline zpyder

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Power output of a headphone jack?
on: March 14, 2010, 21:00:50 PM
Im curious just how much power can be gotten out of a 3.5mm headphone jack? Ive seen a few devices which are charged via such sockets, and Ive always attributed these devices to be a little on the cheap and tacky side, such as cheap mobile phones, PDAs, and in the current case a cheap electric shaver.

Is there any reason why the manufacturers opt for these? Are they safer? More economical...or just cheaper?
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Power output of a headphone jack?
Reply #1 on: March 15, 2010, 02:10:18 AM
theyll be able to take just as much power as similar sized connectors... so laptop power supplies etc...

and I guess the big downside with them is..... theres a whole bunch of dumb people out there will go and plug it into there hifi/etc.. because A) they dont realise its a dumb thing to do or B) they know its a dumb thing to do, but are dumb enough to do it anyway to see what happens
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  • Offline Leon

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Power output of a headphone jack?
Reply #2 on: March 15, 2010, 10:10:43 AM
Haha I would prob be in the B group. I would be curious what would happen :P
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  • Offline zpyder

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Re:Power output of a headphone jack?
Reply #3 on: March 15, 2010, 11:30:13 AM
I did blow up my old iriver mp3 player one day when I reversed the polarity of the generic car charger I was using...
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