Datasheet   Description    This chip can control three and four phase stepping-motors in either 1, 2 or 1-2 phase excitation-mode
operation. The product is a result of our continuous effort to simplify and lower the cost of complicated
circuitry previously required for this purpose. The entire logic circuit for signal processing is loaded onto
a single chip in the SDB-520 (A). Therefore, it is fully operational as a driver, with only a minimum
additional equipment. All you neet to supply is a pulse generator, a power transistor and some direct current.

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