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| Electrical buzz https://auszookers.com/forum/viewtopic.php?f=5&t=16837 |
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| Author: | Che [ Tue Nov 16, 2010 10:13 am ] |
| Post subject: | Electrical buzz |
I bought a 12v socket --> USB adaptor from jaycar yesterday to power up the iPod in the car. I have the ipod connected to the car stereo via an aux in. But, if I have the iPod running and recharging at the same time I get some wierd computery electro interference through the speakers. Pull out the power and music playback is peachy again. Is this a grounding issue? |
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| Author: | Kermy87 [ Tue Nov 16, 2010 11:09 am ] |
| Post subject: | Re: Electrical buzz |
It's the transformer in the USB making ellectrical noise, kinda the same as an old tv if you ran a 240v power drill near it,, it went ape shit, not alot you can do about it, mine old one done the same thing, then I just bought a proper fusion iPod intergrated head deck, problem solved, |
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| Author: | Moph [ Tue Nov 16, 2010 11:28 am ] |
| Post subject: | Re: Electrical buzz |
100% normal. You can fit a line noise filter to the radio (Jaycar stock them) which will help but you'll likely still have a high pitched whine. I just avoid charging the iPod while I'm using it. |
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| Author: | pyrohamish [ Tue Nov 16, 2010 11:46 am ] |
| Post subject: | Re: Electrical buzz |
Something that might work would be setting the audio ground the the vehicle ground. I have this same problem, havnt tried to fix it though, just avoid charging and listening. |
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| Author: | royce [ Tue Nov 16, 2010 7:15 pm ] |
| Post subject: | Re: Electrical buzz |
see if you get a buzz using headphones while charging from your usb doohicky |
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| Author: | Che [ Tue Nov 16, 2010 11:00 pm ] |
| Post subject: | Re: Electrical buzz |
royce wrote: see if you get a buzz using headphones while charging from your usb doohicky
I just tried this - no noticeable noise in headphones, but right there when you plug back into the aux in. |
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| Author: | royce [ Tue Nov 16, 2010 11:09 pm ] |
| Post subject: | Re: Electrical buzz |
its an earth loop then, hum created by 2 different signal earth points, try earthing the usb and radio to the same point (in theory works, in practice it doesnt) Or try a ground loop isolator, though by the time you stuff around getting one and converting the RCA ends to 3.5mm youve spent a lot of money |
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