>>http://www.bobblick.com/bob/projects/hbridge/hb01.html
>>Driving both inputs does motor braking.
>
>Cool - I printed that PDF out (the schemo).  I'm trying to figure
>out what happens across the motor legs when braking ... both
>legs to ground (or V++)?  Or maybe the motor flyback current
>makes the circuit apply equal & opposite power?  Hmm the
>later might eliminate the need for flyback diodes that I don't see
>in your schemo?

The advantage of using TIP series darlington transistors is builtin
pinch-off resistors and freewheel diodes, saving a few parts(plus the
transistors are only 60 cents each in single quantities).

When you drive both inputs, both lower transistors are turned off and the
upper transistors are on, pulling both motor terminals to V+, and braking
occurs.

Cheers,

Bob

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