[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: gEDA-user: hydraulic symbols and schematics
> If you look at some hydraulic schematics, you'll see a rich duality
> between electric and hydraulic circuits. For example, the pressure
> drop across an orifice is analogous to the voltage drop across a
> resistor. Hydraulic power is pressure * flow (i.e. V * I).
http://www.unusualresearch.com/Pump/bellocq.htm
US Patent: 1,941,593 01/02/1934 "PUMPING" [This patent is
interesting in that it shows the plumbing equivalent to resonance
circuits, high pass, low pass, and band pass filters.]
http://v3.espacenet.com/publicationDetails/biblio?DB=EPODOC&adjacent=true&locale=en_EP&FT=D&date=19340102&CC=US&NR=1941593A&KC=A
_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user