What do u mean by galvanic isolation?

lambs become Lions

-----Original Message-----
From: Michael Watterson <mike@radioway.org>
Sender: piclist-bounces@mit.edu
Date: Tue, 13 Sep 2011 23:55:15=20
To: Microcontroller discussion list - Public.<piclist@mit.edu>
Reply-To: "Microcontroller discussion list - Public." <piclist@mit.edu>
Subject: Re: [EE] Driving Power mosfet

xavierpereira wrote:
> http://dl.dropbox.com/u/20793649/Transformercoupled.JPG Transformer Coupl=
ed
> gate Drive=20
> http://dl.dropbox.com/u/20793649/Capacitvely%20Coupled%20Mosfet.JPG
> Capacitively Coupled Gate Drive=20
>
>
> Can Some help me to know the difference between a Capacitively Coupled Ga=
te
> Drive and Transformer cuoupled Gate Drive ?
>
> I have to use the Transformer Coupled Gate Drive for My project=20
> But I cannot find one here in Bangkok
>
> can I replace it with Capacitively Coupled Gate Drive  and what would be =
the
> effect ?
>
> http://dl.dropbox.com/u/20793649/Gate%20Driver.JPG My Gate Driver Circuit=
=20
>  =20
A 1:1 transformer can work. A small common mode filter can be used as a=20
1:1 gate drive transformer.
if you need galvanic isolation, then capacitor coupling is no use.


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