[TriEmbed] N-MOSFET Symbol

Jim Ray jim at neuse.net
Thu Mar 10 08:23:57 CST 2016

N-MOSFET or N-channel metal oxide semiconductor field effect transistor uses gate voltage to deplete charge under polysilicon gate for current to flow from source to drain.

NPN or bipolar transistor uses current injected into base for electrons to flow from collector to emitter and is a completely different beast.

-----Original Message-----
From: TriEmbed [mailto:triembed-bounces at triembed.org] On Behalf Of Grawburg via TriEmbed
Sent: Thursday, March 10, 2016 8:32 AM
To: triembed at triembed.org
Subject: Re: [TriEmbed] N-MOSFET Symbol

Pete is 100% correct.
The intention is get them acquainted with standard symbols. In the case of the N-MOSFET it's to help them see it is more than a NPN transistor in a thick case. The other comments made about this topic have been helpful...they all go into my notebook.


-----Original Message----- 
> From: "Pete Soper via TriEmbed" <triembed at triembed.org>
> To: triembed at triembed.org
> Date: 03/09/16 05:25 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.

[This was sent from a PC running Debian 7, 64-bit Linux. No Microsoft products were used.]

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