-----Original Message-----
From: cctalk-bounces at
classiccmp.org [mailto:cctalk-
bounces at
classiccmp.org] On Behalf Of Tony Duell
Sent: Monday, November 02, 2009 11:51 AM
To: cctalk at
classiccmp.org
Subject: Re: Panasonic JA751 8" drive question
I don't know that you would want to apply 24v across a 12v regulator,
It's quite possible (in fact I would say 'likely') that the raw 24V is
used for things like the motors and head load solenoid, and is
regulated
down to 12V for the read amplifier, etc. In which case you would need
24V
input
-tony
IIRC, the common LM78xx regulators were fine with input up to 40v. -- Ian