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03-14-2004, 08:18 PM
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#1
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Newbie
Join Date: Feb 2004
Posts: 5
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Fixed My Buzzing with AC Inverter
I have my first pass laptop mp3 player in my car.
I bought a 225kw ac -dc inverter from Target for $29. It had some sine wave thing on it. I use a Armada Laptop 1500, which uses 110v ac and the goes to 18v and 5v dc in the plug,
I play back to the stereo using an irock....
Experimenting I noticed when I plugged the irock using the 12v lighter there was a buzz at all volumes but not increasing with the RPM. I knew it was a ground. When I used the irock with batteries it went away. I knew then that the DC power coming into the irock and therefore grounding through the headphone was floating compared to the DC AC AC DC on the inverter side. I grounded the irock to the laptop frame
No more buzz!!!!!
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03-14-2004, 10:19 PM
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#2
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I'm sorry, and you are....?
Join Date: Jan 2003
Location: Ruston, LA
Posts: 9,860
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Quote: Originally Posted by jjcuff1
I bought a 225kw ac -dc inverter from Target for $29.
So you bought a 225,000 watt invertor for $29... 
__________________
FrodoPlayer.com
TeaBaggins.com
[H]4 Life
My next generation Front End is right on schedule.
It will be done sometime in the next generation.
I'm a lesbian too.
I am for hire!
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03-14-2004, 11:07 PM
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#3
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Variable Bitrate
Join Date: Feb 2004
Location: San Francisco
Posts: 240
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that is a hell of a deal. by the way.
What of the Irock did you ground? ground of line out or what?
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03-14-2004, 11:48 PM
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#4
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Maximum Bitrate
Join Date: Aug 2003
Location: CA
Posts: 461
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i could power a lot of stuff of 225,000 watt........
__________________
2000 Maxima CarPC
Current Status: Rebuilding
Specs
- 1.5Ghz Toshiba Laptop
- Indash Motorized 7" VGA TS
- DeLorme GPS
- Power Inverter
- Pioneer HU
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03-15-2004, 12:08 AM
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#5
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Constant Bitrate
Join Date: Oct 2003
Location: ACT, Australia
Posts: 114
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Quote: Originally Posted by jjcuff1
I bought a 225kw ac -dc inverter from Target for $29.
I wonder how much the 1210kw are going for?? 
__________________
Caputer Mk. II
'02 VX Holden Commodore Series II Executive
MII12000, 512MB RAM, 60GB HDD (5400rpm), 16X DVD, TS200V
Morex 60W DC-DC, Custom S/SDC
OS/Software: Developing...
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02-01-2005, 07:18 PM
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#6
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Constant Bitrate
Join Date: Feb 2005
Location: Austin, Texas
Posts: 175
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now THAT would burn out your alternator quick :P
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02-02-2005, 09:16 AM
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#7
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MySQL Error
Join Date: Sep 2003
Location: Beach City, Socal
Posts: 4,033
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Now, with 225 kw, you can power a whole house 
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02-02-2005, 12:09 PM
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#8
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Maximum Bitrate
Join Date: Apr 2004
Location: MI
Posts: 678
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How many jigawatts does it put out then? 1.21 perhaps?
__________________
1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*
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02-02-2005, 12:18 PM
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#9
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Constant Bitrate
Join Date: Apr 2004
Location: Los Angeles
Posts: 193
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damn you! i was gonna make a flux-capacitor reference!!
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"Is Wayne Brady gonna have to choke a b@$#*??!!"
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02-02-2005, 01:21 PM
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#10
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Maximum Bitrate
Join Date: Apr 2004
Location: MI
Posts: 678
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Sorry couldn't help myself. "The only thing that could produce that much power is a bolt of lightning!"
__________________
1.6GHz HP e-PC, 768MB RAM, 120GB WD HDD, Slim DVD-ROM, Onboard sound & video, 7" Lilliput, USB GPS Mouse, Audiovox FM Modulator, Vector 400 Watt Power Inverter, Windows XP Pro SP2, iGuidance 2, 15" Samsung LCD for the rear *Carputer not installed*
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02-02-2005, 02:33 PM
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#11
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Maximum Bitrate
Join Date: Feb 2004
Location: Atlanta
Posts: 836
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Quote: Originally Posted by dodgetimes2
Sorry couldn't help myself. "The only thing that could produce that much power is a bolt of lightning!"
Or a high protein diet fart.
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02-02-2005, 05:18 PM
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#12
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Variable Bitrate
Join Date: Oct 2004
Location: South Carolina
Posts: 340
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hehehe ... funny how 1 letter wrong could cause all of this
do tell what part of the irock you grounded to the laptop frame. I will be doing this kind of setup soon!
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02-02-2005, 09:12 PM
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#13
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Raw Wave
Join Date: May 2003
Location: Florida
Posts: 2,017
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Forget all this fools. anyways you grounded the inverter to the laptop??????? WTF.... if you are getting the power from cig lighter then why would you ground the inverter to the laptop? i dont think this is right man.
__________________
07 Jetta
Carputer:
Voompc-2, Intel 1.33, 1GBram, 60gb HD, Dynamix 8"
Audio:
front Qsd 216
Rear QSD 213
Rockford (2) p2 10" subs
JL 500/1
JL 300/4
Audigy 2 nx
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02-02-2005, 09:15 PM
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#14
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Maximum Bitrate
Join Date: Jun 2004
Location: Los Angeles
Posts: 836
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how many jigawatts did Doc need?
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