Introduction The d2hb882mb is an economical microstepping driver based on patented technology of longs motor.It is suitable for driving 2-phase 4-phase hybrid stepping motors .By using the advanced bipolar constant-current shopping technique , it can output more speed and torque from the same motor, compared with traditional drivers , such as l/r drivers .Its 3-state current control technology allows coil currents to be well controlled and with relatively small current ripple, therefore less motor heating is achieved. Features Low cost and good high-speed torque 14 selectable resolutions Supply voltage up to +80vdc Suitable for-2-phase and 4-phase motors Output current up to 5.86a Dip switch current setting 8different values Optically isolated input signals Pulse frequency up to 200khz Automatic idle-current reduction Small size (107*97*48), weight:1kg