On Tue, Mar 02, 2010 at 11:38:00AM +0100, Gabriel Paubert wrote: > On Tue, Mar 02, 2010 at 02:01:51AM -0500, DJ Delorie wrote: > > For matching, can you just press them onto a pcb carrier? Something > > that plugs into a breadboard, and gives you three big copper pads to > > contact? Assuming holding them down with your finger or even just > > letting gravity do the work, it might be sufficient.
> From my experience, gravity is insufficient. The contact quality > is too poor if you don't have anything to press the device against > the pads. > > I was testing at ~1GHz, but it should not affect that much, > except that you need some plastic stick insted of a finger > (too much disturbance, probably stray capacitance). And at the DC extreme, the heat of the finger will make any attempt to match offset a joke (other parameters maybe not so much). So, no, usually fingers need to stay away from the DUT. -- There's one way to find out if a man is honest: ask him; if he says yes, you know he's crooked. -- Twain _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
