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TC78S121 PWM Dual-Stepping Motor Drivers Toshiba TC78S121 PWM Dual-Stepping Motor Drivers are chopper type dual-stepping motor drivers that can drive up to four brushed DC motors. The drivers incorporate two pairs of H-bridge drivers, and can drive two DC motors or a single stepping motor. The IC incorporates the VCC regulator for internal circuit operation, so an external power supply (5V) is not required.
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