14 Jun
2016
14 Jun
'16
8:12 a.m.
On 14/06/2016 12:19, Lionel Johnson wrote:
On 14/06/2016 4:40 AM, Jerry Weiss wrote:
When I worked on this gear, we kept a magnet assy from a CDC 9762 80mb
drive under the bench in a safe place, and used it to bulk-erase any
tapes as needed. The magnets from a RA81 failed cartridge are very
small and powerful, will do nicely. I keep a few in my workshop for
gen duty screw pickup, etc.
Lionel.
I though I'd pursue the mag mount route
flipping the mount over shows a center puck like magnet made from a
metal and about an inch and quarter across.
Then there's a gap of a quarter of an inch and then an annular
ferrite ring about six inches across.
The central magnet seems the stronger of the two and a compact tape
cassette will stick to it.
So I'll rotate the cartridge through the magnetic field and see if that
erases it.
R
Anybody know what this is about?
MSCPCK-I-MU0-FW Rev level is 003/HW Rev level is 000
On Jun
13, 2016, at 12:55 PM, Rod Smallwood
<rodsmallwood52 at btinternet.com> wrote:
On 13/06/2016 17:20, Rod Smallwood wrote:
>
> I just had a thought is the magnet in a microwave cooker magnetron
> permanent or electro?
A rare earth magnet savaged from a disk drive or a banned child toy
(aka BuckyBalls) might be more effective.
Jerry