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asked Aug 16, 2013 in Consumer Electronics by manish kumar sharma | 489 views

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The hard drive would normally require two supply rails.
+5 Volt and +12 Volt DC.
These supply rails will need to supply a fairly heavy current mainly for the
start-up of the spindle motor.
They should both be regulated voltages so as to avoid over voltage damage to
the sensitive electronics.
answered Aug 17, 2013 by Shikhar

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