10 May
2018
10 May
'18
10:39 a.m.
there is a picture of a small 10K RPM drum here
http://museum.ipsj.or.jp/en/computer/device/magnetic_drum/0017.html
On 5/10/18 10:37 AM, Al Kossow via cctalk wrote:
On 5/10/18 9:29 AM, Paul Koning via cctalk wrote:
One that comes to mind is the DEC RS04. It spins
at roughly 3600 rpm (a hair less, so obviously a 2 pole induction motor running off
3-phase 60 Hz power).
Vermont Research drums (model 1175B) spun at 3450 rpm 3ph
220v, The HP 2773 on the 2000A TSB was from VR so I expect RPM
would be similar for most drums of similar diameter.
from
https://ia800809.us.archive.org/27/items/TNM_Drum_memories_-_Vermont_Researā¦