2007-03-21 20:18:44 · 4 answers · asked by ___ 4 in Computers & Internet ➔ Hardware ➔ Desktops
This example is for a high performance WD 500GB drive.
They use different voltages for the controller card on the drive & for the for the spindle motor & for the electromagnets that move the heads.
12 VDC
Read/Write 450 mA
Idle 430 mA
Standby 20 mA
Sleep 20 mA
5 VDC
Read/Write 800 mA
Idle 730 mA
Standby 270 mA
Sleep 250 mA
Although the voltages will be the same for all internal desktop hard drives, the current will vary slightly.
source :
http://www.wdc.com/en/products/Products.asp?DriveID=214#jump1616
regards,
Philip T
2007-03-21 20:30:00 · answer #1 · answered by Philip T 7 · 0⤊ 0⤋
They usually require all three available voltages, +12, -12, and +5 volts dc. As for current, that is a function of how much power they require to perform their function at any point in time. The current is higher for the more modern fast speed drives.
2007-03-21 20:28:43 · answer #2 · answered by Just Helping 4 · 0⤊ 0⤋
12 volts. Current is dependant on what the hard drive resistance load is and will vary from drive to drive. Current will also vary depending on how hard the drive is working.
2007-03-21 20:26:07 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Hard Drive uses 12V @15W – 30W
2007-03-21 20:29:46 · answer #4 · answered by Christian Soldier 7 · 0⤊ 0⤋