19 Oct
2008
19 Oct
'08
3:38 p.m.
On 19 Oct 2008 at 17:11, M H Stein wrote:
Yes they do - I have both the newer (dual tandon) and older (persci)
System-3's, and they both have a 24v supply, and it's needed for the
drives in both cases.
Dave
--
dave06a (at) Dave Dunfield
dunfield (dot) Firmware development services & tools: www.dunfield.com
com Collector of vintage computing equipment:
http://www.classiccmp.org/dunfield/index.html
Sounds like you've got one of the later
System 3's with a Tandon TM848;
the older ones used dual-slot Perscis, which used 110VAC for the motor.
And of course he could also use a 5 1/4" drive instead.
The Persci 270/277 dual drives still require +24v for the positioner,
no?