On 3/24/2012 4:02 PM, gene heskett wrote: >> > Thanks Mark. Every other place I hit wants to sell it in 100' or 300' > rolls. But Jameco was a bit proud for the male IDC connectors, made up for > the most part by USPS shipping. $29 for enough stuff to make 2 cables, > with some ribbon left over seems a bit much. But they are ordered, hold > for complete shipment mode. > > I managed to get the LM317T's mounted& wired, but the si rubber insulators > I stripped out of a defunct Antec PSU aren't that good, the LM317T feeding > a PSU fan about 17 volts measures 097F on the 317's tab, but only 71F on > the other side of the 1/4" alu plate its bolted to, in a 68F room. With > no drivers hooked up yet, it takes about 20 seconds for the fan to start > slowing down, and another 20 secs to stop after I toggle the power switch > back off. The filter is a pi section with an unknown choke inductance& > 20k uf on both sides of the choke. > > That particular fan apparently has a poorly timed commutation, it looks > like it's trying to crowbar the supply for about 200ns every time it > commutes to the next coil sequence. I may see if there is a smallish choke > in that PSU that will shove that stuff back into the fan, it might reduce > the draw by a few percentage points. > > Silly Q about lathe mode. Can somebody load examples/lathe_pawn.ngc into > their machine& see if its upside down and reversed left right on your > display. Here it shows the pawn's radius above the centerline, and the > large diameter bottom on the right. And will not of course run unless I > edit the ini and let it go inches or feet negative in both directions. > > Cheers, Gene > Gene,
I ran into the same problem looking for cable to make up plugin extenders for a Tektronix TM50x. I needed a little less than 15' of 15 conductor ribbon. 100' and 300' was just ridiculous for what I was trying to do, so I bought 10' of 30 conductor from Jameco last week. Split 'er in two, and cut off 3' sections and I'm in like flint. I miss having a full-featured electronics shop nearby. The Shack just don't cut it for much more than solder and flux anymore. Used to have a nice little shop run by an elder gent a couple of miles down the road. Need a length of cable? No prob. He'd cut it to length for you. Had a nice wall filled with bins of components too. Not like that almost worthless set of pseudo-Vidmars that the Shack calls their electronics component rack. Almost everything has to be mail order any more. Sucks. Mark ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
