|
Home > Archive > Alternative Power sources > August 2005 > dobble insulated av equip on mod-sine
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
| Author |
dobble insulated av equip on mod-sine
|
|
|
| I have interference problems with double insulated av equipment . by
accident I have found out that if you take the fg (on audio line) and
ground it to earth the problem all most disappears . but is this safe ?
as double insulated appliances should not normally be grounded .
| |
| Ptaylor 2005-08-28, 11:21 am |
| samc wrote:
> I have interference problems with double insulated av equipment . by
> accident I have found out that if you take the fg (on audio line) and
> ground it to earth the problem all most disappears . but is this safe ?
> as double insulated appliances should not normally be grounded .
It may depend on the specifics of your inverter,and how/if it needs to
be grounded.
Having said that,My stereo is indirectly earth grounded,through my PC.
The PC is earth grounded,and thus,the stereo is too,through the audio
cable that runs to the PC.
If I had a cable running to the TV/VCR,that would be another ground
point (Cable/Sat. TV lines are usually always earth grounded at,or near
the house they serve.-This can also be a cause of ground loops!)
| |
|
| Ptaylor wrote:
> samc wrote:
>
>
>
> It may depend on the specifics of your inverter,and how/if it needs to
> be grounded.
>
> Having said that,My stereo is indirectly earth grounded,through my PC.
> The PC is earth grounded,and thus,the stereo is too,through the audio
> cable that runs to the PC.
> If I had a cable running to the TV/VCR,that would be another ground
> point (Cable/Sat. TV lines are usually always earth grounded at,or near
> the house they serve.-This can also be a cause of ground loops!)
Ar had not thought about in-direct grounding . thanks ptaylor .
| |
| Scott Willing 2005-08-29, 10:21 pm |
| On Sun, 28 Aug 2005 21:35:00 +0100, samc
<remprefix.samuel.7scrubthis9@tiscali.co.uk> wrote:
>Ptaylor wrote:
>
>Ar had not thought about in-direct grounding . thanks ptaylor .
Yep, he's right, and you should count yourself lucky that you can fix
the problem by grounding something. The most common hum/buzz problems
usually involve too many grounds (hence loops, as mentioned) and the
only viable solution (signal-level) ground isolation transformers.
-=s
|
|
|
|
|