Microcontroller homework 07
1 1 1 0 ON ON ON ON ON OFF ON OFF A:CC
B:
1 1 1 1 ON ON ON ON ON ON ON ON A:CC
B:CC
The diodes, D1-D8, protect the transistors against the coil flyback voltagewhen the transistors
are turned off. The motor shaft is rotated by applyingdrive voltage to each input in the proper
sequence.
4.
Shoot-through, also known as cross-conduction. This is the condition that occurs when the
upper and lower transistors on the same side of the coil turn on at the same time. If two
transistors turn on at the same time, there will be a very low impedance between the supply
voltage and ground -- effectively a short. This usually destroys one or both transistors. In a
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