[TriEmbed] N-MOSFET Symbol

kschilf at yahoo.com kschilf at yahoo.com
Wed Mar 9 17:44:08 CST 2016


Hi Pete,
Good note about warning flags.
I have no idea about the application.  Current in an inductor can not change instantaneously.  If you are going to interrupt the circuit, you should provide a path to allow the inductor current to continue (catch diode in a switching power supply) or diminish (diode across a relay winding), etc.  If not, you let Mr. Murphy determine where the energy will go, sometimes with exciting consequences.  :-)
Sincerely,Kevin Schilf


      From: Pete Soper via TriEmbed <triembed at triembed.org>
 To: triembed at triembed.org 
 Sent: Wednesday, March 9, 2016 5:25 PM
 Subject: Re: [TriEmbed] N-MOSFET Symbol
   
I'm pretty sure about 70% of Brian's interest in this subject involves 
dealing with inductive loads. The body diode in the schematic symbol is 
a merciful hint.  If his kids can remember that the lack of a body diode 
is a red flag they might avoid blowing up their BJTs or adding redundant 
components.

-Pete


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