christopher hoover wrote: > Tim Shoppa wrote: >> mostly they were using custom-wound nonlinear wire-wound pots and >> motors driving shafts to make the phases :-). > > Oh, that is so cool! And obvious once you think about it. I love stuff > like that.
Actually such things were pretty common in pre-transistor times. GM used a gizmo, in their buses made in the 1950's, that had 3 such wire wound pots ganged together, but shifted 120 degrees. They connected the pots to a gear on the transmission (in the back of the bus) and created 3 phase power that was used to drive a 3-phase synchro that ran the speedometer (in the front of the bus). -Chuck Harris _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
