Outlined below is a zip code list for Portland. Select a zip code you are interested in to find zip code data on demographics, family, housing, education, transportation, and real estate. See the Portland Zip Code Map.
For other uses, see Volt (disambiguation). The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.
The symbol of Fig. 104 is a good one for the toroidal type of impedance coil. Cyclopedia of Telephony & Telegraphy Vol. 1 Kempster Miller.