On 02/02/2011 06:09 AM, gene heskett wrote: > Gene, >> Don't know if you follow much of the goings on over at CNCZone, but >> there's a fella over there that's designed and is selling a PID >> controlled speed controller for routers. The reports from the guys >> using it are all thumbs up. Maybe you could think of a full sized >> router, which would give you a bigger choice in tool bits, and use the >> PID speed controller to settle that wild mustang down for certain bits? >> >> Mark >> > I am not sure what the applicable acronym for the controller I have would > be, its the repaired unit from the original head of a micromill. Speedwise > it is so stiff I had to build an ammeter into the motor leads so I could > see how hard it was working because that is the only way I can afford the > fuses, currently 2 amps. Thinking, when I next run out, of replacing them > with 2.5 amps since the hexfet in the output stage is now a 22 amp rated > device. Old pc psu's are an excellent source of repair devices for those. > Same physical size as the OEM device, but about 3x the voltage rating and > about 3x the current rating. > > This is a case of TANSTAAFL though as the bigger output devices need > correspondingly heavier driving devices to drive their increased gate > capacitance, so I did some testing while watching the driver transistor > with an IR thermometer to see if it was heating excessively but I got by > with it, the switching times remained short enough that neither device > warmed up enough to concern me. That whole controller now shares a big rat > shack project box with a PMDX-106 so the computer or I can control it. > Been there about 2 years now with no vent holes in the box and run times of > a week or more. I keep forgetting to turn it off when I'm done as its > silent. :) I think its running right now.
As far as I know from what I've read on it, it is made to handle most any 110 VAC router. I would include laminate routers in that too. I'll see if I can dig up the link to the speed controller sometime today. Mark ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
