3 Aug
2014
3 Aug
'14
9:09 a.m.
On 08/03/2014 08:33 AM, Al Kossow wrote:
At least with tape, air flow is critical. You have to
push a lot of air
into the reel to get at the inner wraps.
I've never tried baking floppies in the oven I built because of the air
flow (9 5" muffin fans in the bottom between
the heating element and the tape) so if this works out I may get one
just for dealing with floppies.
I went to a traditional induction motor fan running at low speed (lots
of volume, not much velocity). I bake tapes for most of a day, then
allow them to cool overnight. So far, so good.
I don't much care for the 848s either. One aspect is that the drive
spindle motor itself is 24V, but the positioner is 12V. There's a
somewhat over-taxed LM7812 to drop the voltage accordingly, which often
fails--that must have been known, because there's a fuse in series with it.
--Chuck