Television remote control

TAKE A METER stick and measure five objects in meters. Write your answers to two decimal places. For instance, you might find that your television remote control is 0.18 meters long and your bed is 1.72 meters long. Save these measurements-we ll use them in a little while ... 

Transistors are used to increase the strength of electrical signals in such devices as television remote controls, telephones, and hearing aids. 

Control plug for Stereo phonograph cartridge Airline passenger service unit Television remote control switch assembly... 

Alkaline batteries (Fig. 19.12) are the power source in television remote controls, many toys, and personal stereos. These are often classified by their electrical potential and shape and size, such as the round AA or AAA 1.5-volt batteries or the rectangular 9-volt batteries. The anode of an alkaline battery is a gel that contains zinc in contact with a potassium hydroxide solution. The presence of the hydroxide ion is what gives these batteries their name. The cathode is a mixture of manganese(IV) oxide and graphite. The reactions are... 

The principles discussed in this chapter have a host of practical applications. Whenever you start your car, turn on your cell phone, or use a remote control for your television or other devices, you are making use of a voltaic cell. Many of our most important elements, including hydrogen and chlorine, are made in electrolytic cells. These applications, among others, are discussed in Section 18.6. ... 

Radio waves have the lowest energy (lowest frequency). We use them for radio and television communication, digital imaging, remote controls, and wireless linkages for laptop computers. Radio waves are also used in NMR spectroscopy and in magnetic resonance imaging (MRI) (Chapter 14). 

Extras Feature or characteristics about a product or service that supplements its basic functioning (i.e., remote-control dialing on a television). 

The examination of core support feet has been visual, by remote control television, as requested by ASME XI. Normally the camera scans each surface producing a 1 1 picture on a 12" TV screen, but this can be enlarged either by zooming the lens or moving the camera closer. 

Miscellaneous protective devices such as both long-and short-handled tongs for holding or manipulating hazardous items at a safe distance and remote control equipment (e.g., mechanical arms, stopcock turners, labjack turners, remote cable controllers, and closed-circuit television monitors) should be available as required to prevent exposure of any part of the body to injury. 

Today, infrared LEDs are used in a wide variety of applications, where they are typically paired with photodetectors. Infrared flux emitted by an LED source is transmitted a distance ranging from a few millimeters to many meters, and at the receiving end a photodiode or phototransistor detects the flux and converts it to an electrical signal. Silicon devices are most commonly used to detect the light emitted by Al Gai-xAs DH LEDs. Photodetectors made from In Gai-xAs are used with Ga Ini- AsyPi-y LEDs. Such emitter-detector pairs are used for the remote control of televisions and other consumer electronic products. Other applications for infrared LED-detector devices include intrusion alarms, blood gas analyzers, bar code readers, limit switches, and shaft encoders. 

Most remote controls for televisions, DVD players, and similar devices use an infrared LED to communicate between the remote control and the devices. 

In the manufacture of plant and machinery and subsequent periodic inspections and tests, testing is normally non-destructive and a number of specialised techniques have been developed. Equipment is now available to enable visual inspections to be carried out of inaccessible places using fibre optics and remote-controlled television. A major aim of testing is to check the condition of the material of which the plant is constructed and to identify faults that cannot be seen by eye. Special detection techniques used to highlight the weaknesses orfauits in the material include the use of magnetic particles, penetrant dyes, X-ray and gamma-ray sources, ultrasonic vibrations, microwave and infra-red rays. 

Based on the range of Li-ion cell types, 18,650 format cylindrical Li-ion batteries, prismatic Li-ion polymer batteries of comparable capacity to the test 18,650 cells, and packaged power tool rechargeable battery packs with cylindrical cells were identihed as the most pertinent for the analysis. These batteries are typically found in a host of different commodities, including, portable GPS devices, portable game players, portable DVD players, portable televisions, portable radios, cellular phones, music players, electronic readers, notebook computers, cordless headphones, universal remote controls, cameras, camcorders, two-way radios, rechargeable vacuums, electric razors, electric toothbrushes, and electric vehicles. 

Important applications for semiconductor LEDs include digital clocks and illuminated watch displays, optical mice (computer input devices), and film scanners. Electronic remote controls (for televisions,... 

Alarm systems can be integrated with fire detection systems, intrusion detection systems (IDSs), access control systems, or closed circuit television (CCTV) systems, so that these systems automatically respond when the alarm is triggered. For example, a smoke detector alarm can be set up to automatically notify the fire department when smoke is detected, or an intrusion alarm can automatically trigger cameras to turn on in a remote location so that personnel can monitor that location. 

Control Room. The cobalt control room was designed to enable the operator to observe directly the carrier loading area and the entrance to the cobalt cell and to view remotely the interior of the cell by use of television cameras (Figure 11). From the control room the operator can control the conveyor functions and the source elevator in addition to monitoring air flow, water activity, and pool water level. 

The munition route following the unpack area is the Explosive Containment Cubicle (ECC) containing four different demilitarization machines which will be remotely operated. Operation within the ECC will be followed by closed circuit television surveillance. Since there is a chance of an explosive fire incident, the ECC is designed for explosive and agent containment. Each step in demilitarization of munitions is controlled by a computer which also stops the operations within the ECC when a problem develops or equipment maintenance is needed. 

Two other computer facilities are a data collection system which monitors remotely located data acquisition and experiment-control computers via asynchronous serial lines and the two Evans and Sutherland LDS-1 interactive graphics terminals. A PDP 10 included in the network configuration as an alternate file transport concentrator and auxiliary network development machine also performs the role of worker computer with the Evans and Sutherland display equipment. Other subnetworks have been designed for inclusion in the Octopus network to direct the on-line operation of LLL high-speed printer and microfilm recorder output facilities, to administer a second, expanded television monitor system providing 256 channels of video input for distribution to 512 additional monitors, and to control a CDC on-line tape library of 8.7 x 10 bits scheduled for delivery in 1975. The Computer Hardcopy Output Recording System (CHORS) concentrators are two Modcomp II computers, and TMDS-II will utilize two PDP 11/45s both subnetworks are to become operational during the... 

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