27 Mar
2019
27 Mar
'19
1:36 p.m.
Most all 8 inch drives were synchronous capacitive phased AC motors. That is until 3 phase
low voltage motors started showing up on 5.25 disk drives.
The ac motors on the 8 inch drives rarely had jumper options for 120/240V AC. Most were
fixed voltage and cycles. I can't recall any that I've seen that had a voltage
option.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Charles Dickman via
cctalk <cctalk at classiccmp.org>
Sent: Wednesday, March 27, 2019 12:58 PM
To: Chuck Guzis; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: AW: 50Hz Pulley for 8" Floppy Drive Mitshubishi M2894-63B
On Sat, Nov 10, 2018 at 3:27 PM Chuck Guzis via cctalk <
cctalk at classiccmp.org> wrote:
One could also take Tony's approach and simply
cobble up a
crystal-controlled 60Hz source for the motor. Shouldn't be too
difficult--I suspect that the motor doesn't draw more than about 30W.
If you had an excess of 12VDC, you could possibly use an inexpensive
inverter to do the job.
Never saw a floppy drive with an AC motor. In the past discussions about
50Hz vs 60Hz drive, I expected it to be a 120/240 VAC motor. So is it
actually a low voltage (synchronous) AC motor?