Abstract: Two printed circuit boards are provided, each having a row of metallic pads located along an edge. The pads are spaced along the edge so that, when the boards are aligned with the two edges opposing each other, every pad in the row of one board is opposite a pad of the row of the opposing board. Each pad has a drilled center hole suitable for the insertion of a wire. The boards are opposed and spaced apart, and jumper wires are inserted to connect each pair of opposing pad holes. The jumper wires are inserted into the holes from the opposite sides of the pads and the ends of the jumpers are soldered to the pads. The jumper wires are then cut at points intermediate the two boards to provide a row of conductive mounting terminals along an edge of each board.

Abstract: An institutional television system includes a source of standard broadcast composite television signals, an auxiliary source of RF carrier signals conveying sound information exclusive of video information, and a television receiver. The television receiver selectably processes the composite television signal including the sync component thereof in a normal mode, and selectably processes the auxiliary signals in an audio mode. The receiver comprises a video signal processing channel that is similarly energized in both the normal and audio modes. The video channel is controlled to enable light output from the kinescope of the receiver when the video sync component is present in the normal mode, and to inhibit light output from the kinescope when the video sync component is absent in the audio mode.

Abstract: A chassis for a television receiver is provided which is adapted to operate in cooperation with any one of a number of electrical subsystems which perform similar functions but have differing signal and power requirements, such as tuners, receiver controls, et cetera, and are located remote from the chassis within the receiver. Each subsystem is coupled to a connector by a cable. The connector includes a row of contacts located in symmetrically spaced holes in the connector. One of the holes is blocked and serves as a keying indication. Mounted on the chassis is a row of similarly symmetrically spaced terminals, with one terminal missing from the row. A connector can only be mated with the terminal row when the blocked hole in aligned with the missing terminal location.

Abstract: In a remote controlled color television receiver, the television receiver power supply is responsive to the state of an on/off command signal. A DC supply voltage is applied to an input terminal of the power supply during both states of the on/off command signal, with the power supply developing an operating voltage at an output terminal only during the on-state of the command signal. A relay type switch is coupled to a degaussing winding and a source of alternating polarity voltage. The switch is responsive to the presence of the operating voltage and applies the alternating polarity voltage to the degaussing winding to generate degaussing current during the occurrence of, illustratively, the on-state of the command signal.