November 2007
Intermediate to advanced
736 pages
46h 32m
English
Content preview from Consumer Electronics
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CHAPTER 35
REMOTE CONTROLS
One convenient feature of modern TV receivers is their remote control operation. Remote control, as the name implies, is a system by which one is able to control the performance of an equipment placed at a distance.
Many television receivers have provisions for operating the ON-OFF, volume, main tuning, picture contrast and brightness adjustments remotely from a normal viewing distance. The command signal travels to the set in a variety of ways depending on the system. By far, the most popular remote control systems are those which employ ultrasonic signals. The frequencies commonly used for remote control lie in the 40 kHz range.
The remote system has three main components—a remote transmitter, a remote receiver ...
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