Figure 3. Typical St318404 Drive +12 V Current Profile; Figure 4. Typical St39204 Drive +12 V Current Profile - Seagate ST318404LW Product Manual

Cheetah 18XL Product Manual, Rev. A
+12 Volt Current during spindle start – Typical Amperes
3.0
2.5
2.0
A
1.5
1.0
0.5
0.0
T
T1
0.0 2
Figure 3. Typical ST318404 drive +12 V current profile
+12 Volt Current during spindle start – Typical Amperes
3.0
2.5
2.0
A
1.5
1.0
0.5
0.0
0.0
Figure 4. Typical ST39204 drive +12 V current profile
AC Envelope
Nominal (average)
DC curve
T2
T3
4 6 8
AC Envelope
Nominal (average)
DC curve
2 4 6 8
T4
10 12 14
Seconds
10 12 14
Seconds
T5
16 18 20
16 18 20
23