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Author Topic: 400w inverter Buzzing  (Read 2277 times)

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Live6766

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400w inverter Buzzing
« on: February 06, 2008, 11:17:31 PM »
I have a 400w inverter and when plugging in my Computer It Buzzes. The inverter is not a true sine wave and that would be the way to go. BUT I already have the inverter.

What I am asking is Can i install a Large size Capacitor in line after the inverter and before the house power?? Will this work?
« Last Edit: February 06, 2008, 11:17:31 PM by (unknown) »
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Ungrounded Lightning Rod

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Re: 400w inverter Buzzing
« Reply #1 on: February 06, 2008, 04:20:23 PM »
It will probably kill the inverter.
« Last Edit: February 06, 2008, 04:20:23 PM by Ungrounded Lightning Rod »
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AbyssUnderground

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Re: 400w inverter Buzzing
« Reply #2 on: February 06, 2008, 04:28:38 PM »
Which item buzzes? The inverter, the pc, or both? The inverter buzzing is normal. If the PC PSU is buzzing, its not, so I wouldn't continue using it on the PC.


Inverters of all kinds I've come across all buzz, some more than others, and some buzz more with a higher load.

« Last Edit: February 06, 2008, 04:28:38 PM by AbyssUnderground »
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jonas302

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Re: 400w inverter Buzzing
« Reply #3 on: February 06, 2008, 05:04:34 PM »
my comp also buzzes I quit using it on the inverter for fear of ruining it and not being able to read this site:)
« Last Edit: February 06, 2008, 05:04:34 PM by jonas302 »
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Live6766

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Re: 400w inverter Buzzing
« Reply #4 on: February 06, 2008, 06:18:15 PM »
The computer is buzzing. So will i fry the inverter if i hook a Cap after it or will this not work? Just trying to save from buying another inverter (true Sine). That would be the way to go BUT.
« Last Edit: February 06, 2008, 06:18:15 PM by Live6766 »
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DamonHD

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Re: 400w inverter Buzzing
« Reply #5 on: February 07, 2008, 01:01:50 AM »
You'll likely destroy something fast if you put anything more than a tiny suppressor cap on the AC inverter output.  A big capacitor is more or less a short circuit to AC.  A little suppressor cap probably won't make any difference and may die.


Rgds


Damon

« Last Edit: February 07, 2008, 01:01:50 AM by DamonHD »
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Live6766

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Re: 400w inverter Buzzing
« Reply #6 on: February 07, 2008, 04:23:58 PM »
Okay Thanks To all(Sine wave Inverter it is)
« Last Edit: February 07, 2008, 04:23:58 PM by Live6766 »
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joestue

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Re: 400w inverter Buzzing
« Reply #7 on: February 07, 2008, 05:07:13 PM »
What you want is a low pass filter with a high input impedance on the inverter side.

a "T" pole utilizing 2 inductors and one capacitor is worth trying. at least it can't fry the inverter.


Start with something like 1uf and 2x 3-10mh. you can also connect another cap on the computer side. just make sure you don't connect it backwards.

« Last Edit: February 07, 2008, 05:07:13 PM by joestue »
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Ungrounded Lightning Rod

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Re: 400w inverter Buzzing
« Reply #8 on: February 10, 2008, 11:46:10 AM »
Is the buzzing from the speaker or the power supply?
« Last Edit: February 10, 2008, 11:46:10 AM by Ungrounded Lightning Rod »
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ve6aym

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Re: 400w inverter Buzzing
« Reply #9 on: February 12, 2008, 11:03:18 PM »
Hi,

I had the same problem with my 2.5kw inverter feeding my computer..the inverter was a modified sine wave. I solved the problem by securing a 1 to 1 transformer for 110v ac.

the pc and especially the monitor settled right down and gave me no more worries..Its been going like that for about two years.


cheers

« Last Edit: February 12, 2008, 11:03:18 PM by ve6aym »
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