Hi,

Sharing some of my experience.

I have seen mosfets mainly being used in Inverters on the DCside of the
transformer that converts 12 v battery Dc to 240 V AC (square output).. The
reason being they can handle high DC amperage (10 amps) and are good
switches as they are basically used to generate square waves in transformer
DC side based on IC sqaure waves fed through the controller/IC. Can be usedi
in parallel to reduce the current rating

But they can burn off with fire  if amperage is exceeded and require
wheeling diode circuitary for protection.

Rajiv Thakur


From: Jai Dhar <jdhar@ENGMAIL.UWATERLOO.CA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Tuesday, February 11, 2003 12:51 AM
Subject: [EE]: MOSFET as a digital switch


> Hello all again,
>
>  I am nearing the end of my project (that as some of you may know,
includes a
> power supply that I happened to get a nice zing from) - and I have to make
a
> decision for the types of switches I am going to be using. Now obviously,
I
> could use a good ol' set of mechanical switches to turn the 5V/12V output
on
> and off etc... but this seems rather boring. So I thought since I am using
an
> f877 in there, I might as well try and do it digital - see if I can get it
> working. So my question is that are MOSFET's the best solution for using a
> switch controlled by logic-level outputs? Of course, I would use MOSFET
> drivers.. but I have never used them before, so I'm not sure of the
> advantages/disadvantages. I am aware that I would need to select mosfets
> depending on the source/drain voltage (I think: which would range anywhere
> from 5V to +25) , but is there anything else I need to take into
> consideration? I have searched google for simple schematics using mosfets
for
> switching, but haven't found many - maybe because they aren't the best
> solution to this type of problem. Anyway, any help is appreciated.
>
> Jai
>
>
>
> ----------------------------------------
> This mail sent through www.mywaterloo.ca
>
> --
> http://www.piclist.com hint: To leave the PICList
> mailto:piclist-unsubscribe-request@mitvma.mit.edu
>

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu