2014-11-28 19:56 GMT+01:00 Kirk Wallace <kwall...@wallacecompany.com>:

> On 11/28/2014 10:17 AM, John Kasunich wrote:
> > May I make a suggestion?
>
> I post my work in order to get feedback. Thank you very much for your help.
>
> My next step, which I have yet to post, added a TC4422 after the
> opto-isolator. That is what is in the next scope picture. The FET ran
> with barely a hint of heating while under a load (one hand on the FET
> the other trying to stall the motor, not recommended, do _not_ do as I
> do, folks). The HCPL3150 looks like it combines the bits I have. I'll
> have to get some on order.
>
>

Would it work better with an IRZL44N? It's popular in the Arduino community
for its logic level input.
http://www.edaboard.com/thread245565.html
http://forum.arduino.cc/index.php?topic=11565.0

I use it in a home made engine ECU to PWM a fuel gate and it works very
well.

/S
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