[Coco] Need Teac 100-2 spindle motor driver schematics

[Gene Heskett]

Greets everyone & Marty Goodman in particular;

If anyone has a schematic for the spindle motor driver card thats 
mounted on the bottom of these drives, I'd sure appreciate a copy.

Its a neat little assembly in that it needs ground, 12 volts, and a 
logic signal sink to control it as it plugs into the main board on a 
3 wire cable.

I've removed the motor and card (its a seperate card from the drives 
main board) and have made it into a motorized powder trickler 
controlled by an ir emitter/transistor combo that watches the balance 
beam of my powder scale.  It actually works pretty well, usually 
stopping the trickler tube within .05gr of the target setting.  
Unforch, I have to shut the motor off way ahead of time because the 
rig coasts about one whole revolution of the tube when it stops.

I'd like to modify the driver to put a dc braking into the motor and 
stop it a lot faster but I'd need the schematic to do that 
conversion.

I sure wish they'd have done the drive stepper motor the same way, I 
could roboticize a lot of things, but its built into the main board.  
That stepper has plenty of moxie for a lot of things.

Anyway, if someone has that, can scan it into a format (.jpg, .gif) 
that I can load into gimp and print it, I'd be very gratefull.

-- 
Cheers, Gene
AMD K6-III at 500mhz 320M
Athlon1600XP at 1400mhz  512M
99.27% setiathome rank, not too shabby for a WV hillbilly
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Copyright 2003 by Maurice Eugene Heskett, all rights reserved.