mains supply
31water supply — n. 1. the water available for use of a community or in an area 2. the system for storing and supplying such water, including the reservoirs and mains …
32power supply — noun a) A source of power such as the mains or a generator. b) That part of a piece of electronic apparatus that provides appropriate voltages for the rest of the electronics from the connected AC source …
33the mains — Brit. the source of public water, gas, or electricity supply through pipes or cables. → main …
34Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
35All American Five — The All American Five was a mass produced, superheterodyne radio receiver with five vacuum tubes first designed and produced in the USA in the 1930s.The radio was called the All American Five because the design represented the majority of radios… …
36Power line communication — or power line carrier (PLC), also known as power line digital subscriber line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN), or broadband over power lines (BPL) are systems for carrying data on a conductor… …
37NEMA connector — Twist lock connector redirects here. For the device used in intermodal shipping, see Twistlock. Ungrounded and grounded power plugs …
38Utility frequency — The waveform of 230 volt, 50 Hz compared with 110 V, 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency at which alternating current (ac, also AC) is transmitted from a… …
39Grid-tied electrical system — A grid tied electrical system, also called Tied to grid or Grid tie system, is a semi autonomous electrical generation or grid energy storage system which links to the mains to feed excess capacity back to the local mains electrical grid. When… …
40IEC 60320 — IEC connector redirects here. For other uses, see IEC connector (disambiguation). IEC 60320 is a set of international standards specifying non locking electrical power couplers for the connection of power supply cords to electrical appliance up… …
