This location...

http://www.allaboutcircuits.com/vol_3/chpt_11/1.html

This paragraph...

While basically accurate, this schematic of an H-Bridge has one serious flaw, it is possible while transitioning between the MOSFETs that both transistors on top and bottom will be on simultaneously, and will take the full brunt of what the power supply can provide. This condition is referred to as {I}shoot through{/I}, and can happen with any type of transistor used in a H-Bridge. If the power supply is powerful enough the transistors will not survive. It is handled by using drivers in front of the transistors that allow one to turn off before allowing the other to turn on.

That's funny (as in humorous), the [] had to be translated into {} because it worked in the forum thread.

 

Bill,

Thanks for pointing out the correction. It has been entered in the master copy at ibiblio.

Dennis Crunkilton