Roland Jollivet wrote: > 2008/11/21 Jon Elson <[EMAIL PROTECTED]> > > >> John Kasunich wrote: >> >>> Jon Elson wrote: >>> >>> >>>> John Kasunich gives an excellent response, but didn't mention >>>> connectors. >>>> >>>> >>> Actually, I did, in some detail: >>> >>> >> Agreed, you definitely did mention at least one, specifically! But, a >> multi-axis servo control will have multiple connectors, and the cost >> just adds up. On some of the higer-end boards I make, in the PPMC >> series, the connectors are over 50% of the total board cost. These are >> 2-part, screw-terminal connectors, and can run $15 per pair. (On >> others, some of the special chips are still dominant.) >> > > > Use push-on spade terminals. They work fine for washing machines and > automobiles (25A!). Or lay-on solder strips at the edge of the board. > I suppose, for a one-time project to be hand-made, that would be fine, although they aren't very compact. Without a special machine to insert them, they'd be a real pain in production.
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