Forum: MechMates already cutting
Mon 09 May 2011, 18:17
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Replies: 1,586
Views: 1,012,329
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Forum: MechMates already cutting
Mon 09 May 2011, 09:10
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Replies: 1,586
Views: 1,012,329
Dan, how are you getting 380 Volts? I wouldn't...
Dan, how are you getting 380 Volts? I wouldn't expect the VFD to boost the voltage.
It sounds to me like you are looking at instantaneous peak output measurements on the VFD, but averaged draw on...
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Forum: MechMates already cutting
Sun 30 January 2011, 07:11
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Replies: 1,586
Views: 1,012,329
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Forum: MechMates already cutting
Thu 19 August 2010, 09:58
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Replies: 1,586
Views: 1,012,329
Kobus, in the design I pointed to above, you...
Kobus, in the design I pointed to above, you would replace the MOSFET with one that meets your needs (N-Channel). The IRF840B seems appropriate. As Ken points out, you simply need a source of pwm...
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Forum: MechMates already cutting
Tue 17 August 2010, 08:53
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Replies: 1,586
Views: 1,012,329
Here's a design...
Here's a design (http://www.dprg.org/tutorials/2005-11a/index.html) (I haven't tested it, obviously!)
You'll need a motor power supply up front of it to produce 200V DC for the motor, and then a...
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Forum: MechMates already cutting
Tue 17 August 2010, 06:27
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Replies: 1,586
Views: 1,012,329
Actually, Marius, that looks like it is a PWM...
Actually, Marius, that looks like it is a PWM circuit. Specifically, it uses 2 X the line frequency. The Triac turns off every 1/2 cycle as the AC voltage crosses zero. It doesn't turn on again...
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Forum: MechMates already cutting
Mon 16 August 2010, 12:28
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Replies: 1,586
Views: 1,012,329
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Forum: MechMates already cutting
Mon 21 June 2010, 10:43
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Replies: 1,586
Views: 1,012,329
It's worth noting that the RepRap people have...
It's worth noting that the RepRap people have long been directly interpreting a simplified GCode in their microcontrollers. Of course, they're using relatively large and powerful microcontrollers...
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Forum: MechMates already cutting
Mon 21 June 2010, 08:09
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Replies: 1,586
Views: 1,012,329
robotdigg, I think you misunderstand how Mach3...
robotdigg, I think you misunderstand how Mach3 works. Do you have any evidence that Mach3 works with CANbus or RS232 or RS485?
Unless you can produce a demonstration of that configuration, please...
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Forum: MechMates already cutting
Sun 13 June 2010, 06:46
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Replies: 1,586
Views: 1,012,329
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Forum: MechMates already cutting
Tue 06 April 2010, 08:42
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Replies: 1,586
Views: 1,012,329
On reflection, when I think of examples of...
On reflection, when I think of examples of various turned columns, those with uniform diameters all seem pretty "masculine"; those with tapers or bulges become more "balanced" or in some cases...
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Forum: MechMates already cutting
Fri 26 February 2010, 02:19
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Replies: 1,586
Views: 1,012,329
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Forum: MechMates already cutting
Sat 09 January 2010, 21:30
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Replies: 1,586
Views: 1,012,329
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