Driver circuit for hard drive motor

 · In this video we design a low cost driver circuit for a four wire bipolar stepper motor using two h bridges. Source: www.doorway.ru Bipolar stepper motor driver implemented with the l and the l Source: www.doorway.ru A stepper motor driver (or stepper motor drive) is a circuit which is used to drive or run a stepper motor.  · Your hard disk uses a stepper motor right? Therefore it must have a stepper motor driver. I would start by Googling for the chip part numbers near the stepper motor on your hard disk and build a driver from them. As far as your questions regarding this circuit.  · So A proposed driver circuit might be composed of 4 Half-Bridges (See HD www.doorway.ru) Edit Here is a circuit that will spin up the hard drive to a high speed. I haven't done any torque tests with the Hard drive motors yet, but when I energize one of the coils with a li-poly, it has a respectable amount of hold.

Apply +ve voltage to it as per motor rating. If you want to drive your motor at 12V, apply 12V on this pin. It is also possible to drive motor directly on a battery, other than the one used for supplying power to the circuit, Just connect +ve terminal of that battery to VCC2 pin and make GND of both the batteries common. Running an old Brushless DC (BLDC) Hard Drive Motor with a ESC, RC electronic speed control. www.doorway.ruse are decades old hard dri. There is usually only one 8-pin chip on a hard drive circuit board. You will likely find a number starting with 25 on the chip. Western Digital USB-powered PCBs and some newer, large-capacity Hitachi hard drives have 2 ROM chips, so feel free to swap both. If you aren't sure which chip to swap, contact us, and we will gladly help.

Mar BLDC motors have found wide application in various industries - from computer hard drives to electric transport and industrial robots. In some. 2. The driver board has voltage reverse connection protection, over current protection, short circuit protection, simple wiring, and worry-free use The hard. Jul im looking for some help locating a simple yet effective variable hard drive motor controller circuit or schematic that works with both 3.