A. A. van Zoelen`s "Z-bridge"


Posted on Nov 30, 2012

You can drop all off the transistors and resistors if your motors don`t drain too much current. You only need a 74F139 or 74S139 NOT the LS version. The chip can provide peak currents up to 100mA for a short time (<1 second) and to one output at a time. This is for normal connections. I don`t know how far you can go with this misbehavior. It`s nothing special, but you get the idea how it is done.


A. A. van Zoelen`s
Click here to download the full size of the above Circuit.




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