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Topic: Powering a model elevator with an H Bridge (Read 2251 times) previous topic - next topic

hollyjester

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The 2N2907 isn't great at saturation beyond about 100mA, BTW, it may just be the wrong part for the job.


I read about the performance of the transistors here: http://www.robotroom.com/BipolarHBridge4.html

hollyjester

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it may just be the wrong part for the job.


According to tests on the web (I included a link to one below), 2N2907s seem to work. However, based on the fact that the transistors are heating up so much, I definitely agree with you on the saturation issue. The models I used for making the H bridge never mentioned an Arduino, so the resistors recommended there are probably for a higher amplitude current.

http://www.robotroom.com/BipolarHBridge.html

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