What kind of motor is in a HDD?
spindle motors
Hard Disk Drive (HDD) spindle motors are what cause the disks in HDDs to rotate. The precision of these motors determine the capacity and speed of HDDs, making these components critical to HDD performance.
What is spindle motor in hard disk?
A spindle motor is a small, high-precision, high-reliability electric motor that is used to rotate the shaft, or spindle, on which the platters are mounted in a hard disk drive (HDD).
What is spindle speed HDD?
Spindle speed is the measure of how fast the hard drive platters of a given hard drive spin in normal operation. The spindle speed is measured in rotations per minute (RPM). Spindle speed affects how fast (on average) the hard drive can deliver requested data to the computer.
Does SSD use spindle?
SSD drives are lighter than HDD drives because they do not have the rotating disks, spindle and motor. The moving parts of HDDs make them susceptible to crashes and damage due to vibration. SSD drives can withstand vibration up to 2000Hz, which is much more than HDD.
What voltage does a hard drive motor use?
For a typical 2.5″ hard drive, it requires +5V DC (often converted to +3.3V DC by an on-board voltage regulator).
What is a good HDD RPM?
Rotation Speed Currently, it is usual to find devices with speeds of 5400 and 7200 RPM, although there are some that reach 10000 RPM. For a desktop computer, if you want to enjoy good performance, go for a disk with at least 7200 RPM.
How much power does a HDD need?
The disk industry has been remarkably effective over the years at keeping power consumption low. A typical mid-range HDD today uses somewhat under 10 watts. Actual consumption depends on the type of drive, capacity and usage.
How much power does a 3.5 HDD take?
A 3.5 inch HDD requires a 12v power rail, which the connector does not provide.
How many volts does a HDD need?
3.5″ hard drives require 12V and 5V for the motor and logic respectively. SATA ones may also require 3.3V for the logic. Most smaller laptop drives (2.5″) only require 5V and 3.3V. Some 2.5″ drives also require 12V.
Is there a big difference between 5400 RPM and 7200 rpm?
If you are trying to decide, consider that both drives are virtually identical, but with the difference that a 7200 RPM drive is around 20 percent faster than a 5400 RPM drive. If you want performance, you should consider the 7200 RPM hard drives.
How much power does HDD need?
Typical Power Requirements A CD or DVD drive will take about 20 to 30 watts and a hard drive consumes between 15 and 30 watts. Your motherboard probably uses 50 to 150 watts, and each stick of memory requires about 15 watts.
Is higher HDD RPM better?
7200 RPM hard drives’ advantage is the high performance. Typically, the more the hard drive RPM, the faster the hard disk. Therefore, 7200 RPM hard drives are usually faster than 5400 RPM hard drives.
What is the fastest RPM for HDD?
Hard drives have been engineered with spin rates as low as 1200 RPM and as high as 15K RPM.
What is a hard disc drive (HDD) spindle motor?
Before we go any further, it’s helpful to understand something more about hard disc drive spindle motors in general. First of all, note that a common hard disc drive (HDD) spindle motor is in fact a sensorless three-phase brushless dc (BLDC) motor!
How does torque affect the power of a spindle motor?
These spindles reach their maximum power at a lower speed, then torque is reduced. Figure 2. The torque curve and power curve for a spindle with constant torque followed by constant power. In both cases, the average power consumed in the cut must be less than the available power on the spindle motor.
What are the limitations of a spindle motor?
Two fundamental limitations on machining performance are the spindle motor’s available torque and power. The specifications of the torque and power limitations are often available in torque and power curves from machine tool builders. Understanding those curves starts with understanding the terms.
What is the microcontroller for a disc drive spindle motor?
The motor driver chip is DRV11873, the microcontroller is STC15W404A, and the voltage regulator is HT7550-1. Wow! Getting hold of a suitable controller/driver electronics for your salvaged hard disc/optical disc drive spindle motor is not easy because you may need to consider dozens of boards/modules to pick the right one.