On Wed, 2008-04-16 at 16:14 -0700, Kirk Wallace wrote: > On Tue, 2008-04-15 at 20:42 -0700, Kirk Wallace wrote: > ... snip
> I am wondering if this is just a simple H-bridge with current limit? If > anyone has more information on this drive, I would appreciate hearing > it. Looking more closely at the driver, reveals it has three MC1455 (NE555 compatible) timer/oscillators and an unknown FUA3302. The oscillators must be doing some sort of power conversion. I was wondering why there seemed to be allot of extra transistors and why the motors buzzed even at rest. I need to some more poking around with the scope or voltmeter. -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/Bandit CNC) ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
