VAM - video/audio modulator - colour pictures and sound from your personal computer

Recently, the growth in the number of video hobbyists has kept pace with that of computer "freaks". For this reason, we would like to devote more articles to the field of video in future. The colour modulator presented here will also be of interest to computer fans; it is driven from the RGB output of a personal computer, thus enabling the domestic TV set to reproduce the pictures and "home-composed" audio. VAM- video/atulio VAM — video/audio modulator elektor february 1983 modulator colour pictures and sound from your personal computer First of all, let us answer the question: What is a video modulator? This could be described as a kind of miniature TV transmitter which processes a video signal in such a way that it is suitable for application to the aerial input of a conventional TV set. It is an essential element in a TV games computer, for example, or a test pattern generator. It is also required by a Videotext decoder or TV terminal for a personal computer. Several video mo...