On Sat, 2008-08-09 at 20:54 -0700, Kirk Wallace wrote: > On Sat, 2008-08-09 at 22:34 -0400, Jim Coleman wrote: ... snip > I was wondering if i could just build an H bridge or > > similar switching circuit to run the output between the -12 and +12V > > rails on an AT or AT power supply, maybe use 7809 and 7909 regulators > > to keep it below 10V, to run to the analog VCMD input on the servo > > amp? the manual to the mill says that it runs +/- 9V, ... snip
Thinking more on this, I guess you are right about the H-bridge for feeding the + to - 9V amp input. You would only need to have a single 9V supply to the top of each H leg with the two outputs going to the amp + and - inputs, assuming that the amp input floats. PWM Forward and PWM Reverse would go to the each H input. (?) -- Kirk Wallace (California, USA http://www.wallacecompany.com/machine_shop/ Hardinge HNC/EMC CNC lathe, Bridgeport mill conversion, doing XY now, Zubal lathe conversion pending Craftsman AA 109 restoration Shizuoka ST-N/EMC CNC) ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
