The cable-TV cable from the wall plugs directly into the TV . You change channels using the TV's own remote control . ( Both the box and its remote go back to the mother ship.
32.
BS 73 " Wall plugs and sockets ( five ampere two-pin without earthing connection ) " was first published in 1915, and revised in 1919 with the addition of 15 A and 30 A sizes.
33.
I've never seen one made for one product that fit just right with any other product, leaving alone the issue of different voltages coming out of the transformer in the other end with the wall plug.
34.
Power-failure lights are designed to keep their batteries charged from a wall plug and to automatically turn on after an AC power failure; the power-failure light can be removed from the wall socket and used as a portable flashlight.
35.
Following the introduction of BS 4573 in 1970 there were no longer any UK domestic uses for two-pin sockets except for shavers, so BS 372 was renamed " " Two-pin Side-entry Wall Plugs And Sockets For Special Circuits " " and subsequently withdrawn.
36.
The proliferation of portable wireless communication devices such as mobile phones, tablet, and laptop computers in recent decades is currently driving the development of mid-range wireless powering and charging technology to eliminate the need for these devices to be tethered to wall plugs during charging.
37.
By the 1927 revision of BS 73 four sizes of two-pin plugs and sockets were standardized : 2 A, 5 A, 15 A and 30 A . This was later superseded by BS 372 : 1930 part 1 " Two-pin Side-entry Wall Plugs And Sockets for Domestic Purposes ".
38.
Due to the common-mode rejection of interference characteristic of balanced mains power, a wide range of noise coming from the wall plug is eliminated, e . g . mains-borne interference from air conditioner / furnace / refrigerator motors, switching noise produced by fluorescent lighting and dimmer switches, digital noise from personal computers, and radio frequency signals picked up by the power lines / cords acting as antennae.
