AVR-Chat

Doug: 
> I am sure that one of the hardware gurus will be able to clarify
> things more and correct me if wrong, but on first looks the circuit in
> the pdf looks incorrect to me if all the mosfets are the same. If I
> remember correctly, the idea of the H configuration is to have one of
> the "top" mosfets on one side of the motor and one of the "bottom"
> mosfets on the other side on with the other two off and vice versa for
> the opposite direction of rotation. As things stand, my interpretation
> of the circuit would be that the top control line just switches the
> two "top" mosfets and the bottom line just switches the "bottom"
> mosfets and there is no complementary action with regards to driving
> the motor.
Looks that way, doesn't it?  If they're arranged like this:

1---2
|-m-|
4---3

The gates of 1 and 3 need to be driven together, as should 2 and 4.




Richard

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