Now let us take a look at the functionality of U2. The following figure is copie

Question

Now let us take a look at the functionality of U2. The following figure is copied from the spec of the IC U2.

Half Step Motor Drive Mode. FulVHalfStep Input 1 Clock L1 L3 L4 In the PCB, ignore R11, 12, 13, 14. That is set them as infinite resistance. Now let us assume that the direction input at pin 10 of U2 is high (let us assume this gives us CCW motion in the motor). Let us assume that the Full half step input is set high at pin8 of U2 (Assume this will give '2 step mode). Now if I put a pulse train input to pin 7 of U2, what will the outputs L1 to LA be? Also how will the outputs translate to the on off of current in the motor coil? Answer these questions by filling out the following table. Since the% step mode has 8 steps. Let us divide up time into 8 segments. In the beginning of each time segment, a square wave pulse is applied to pin 7 of U2. Use 1 to indicate Hi or On, 0 to indicate Lo or Off. Time Segment #4 #6 after U3 the inverter Base of Q2 Base of Q3

Explanation / Answer

Too complex to be solved in 2 hours. Sorry

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