IMPROVING_TV_SOUND

Published:2009/7/15 4:57:00 Author:Jessie | From:SeekIC

AF signal from volume control of TV receiver is converted to FM signal by using BC107 transistor to frequency-modulate tunnel-diode oscillator operating within FM broadcast band. Oscillator output is fed through air-core transformer and coaxial line to FM receiver of high-fidelity sound system. Arrangement eliminates most of distortion introduced in power amplifier and loud-speaker of average TV set. Use shielding to keep unwanted FM radiation at minimum.-A. J. Smith, Improving Television Sound, Wireless World, Aug, 1973, p 373.



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