[TriEmbed] Transistor as switch

[Pete Soper]

That's a nice looking transistor.

Here's a YouTube treatment <https://www.youtube.com/watch?v=43HFng0CVKg> 
of what happens when you turn off power to an inductive load and what 
kind of peak-voltage hazards are created with even a modest load (a 
small relay in this case).

-Pete


On 06/16/2015 11:58 AM, Grawburg via TriEmbed wrote:
> After bouncing it back and forth during the night I decided to use a MOSFET afterall.
> I had some FQP30N06L N-channels and wired it up this morning. Works perfectly.
> I did have to lower the resistor between the Pi's GPIO pin and the base to 33 ohm from 3.3 k.
> If this was a real project, say with a 24VDC pump, I would use a BJT between the Pi and the MOSFET.
> I will address this in the class and in the project manual the students get.
> I'll show them the relay set-up so they are at least familiar with the concept.
>
>
> Brian
>
>
>
>
>
>
>
>
> _______________________________________________
> Triangle, NC Embedded Computing mailing list
> TriEmbed at triembed.org
> http://mail.triembed.org/mailman/listinfo/triembed_triembed.org
> TriEmbed web site: http://TriEmbed.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20150616/8d9c633c/attachment.htm>