Difference between revisions of "Test"

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[[Image:speed_controller_simple.gif]]
[[Image:speed_controller_simple.gif]]
<math>

Revision as of 17:25, 18 August 2009

Transistor push pull follower.gif

<math> Beware that there is a “dead band” when Vin is between 0.7V and -0.7V, because the voltage has not pass the cutoff voltage for either transistor. This is known as crossover distortion.



Push-Pull Follower Example: A (Poor) Motor Speed Controller

Suppose we want to control the speed of a motor by varying the input voltage between +5V and -5V. We attempt to do this by setting put a voltage divider with a potentiometer like in the circuit below.

Speed controller simple.gif <math>