ODP: Grounded Chassis

[Roman Sowa]

> -----Oryginalna wiadomość-----
> Od:	Martin Czech [SMTP:martin.czech at intermetall.de]
> Wysłano:	29 czerwca 1999 13:03
> Do:	synth-diy at mailhost.bpa.nl
> Temat:	Grounded Chassis
> 
> 
> Will the E-field be weaker inside the chassis?
	[Roman Sowa]  
	E-field inside will be null - all box walls have the same potential.
	No voltage inside - no E. But whole box will be 'floating' with E.
	When field wave length is comparable with box size,
	that's different story I think. It can be then considered as a piece
of
	waveguide shorted at both ends. I don't think the field could get
inside,
	but if there was a small hole, it could become a 'box resonator'

> If the chassis is grounded there should be no E-field inside.
> OTOH grounding means power cords, this will give some inductance.
> You can't really hard ground anything for higher frequencys.
	[Roman Sowa]  
	At higher frequencies it is grounded by stray capacitances like hand
	of a man standing on the ground.

	Flames ready Roman (and no 'rf man' either)