• on Audio/Video/Photography
  • Published in issue 7/2011 on page 29
About the article

Video Switch for Intercom System

Along with a video switch, the circuit includes a video amplifier that has been used with good results in many other Elektor projects, which allows the brightness and the contrast to be adjusted separately. This amplifier is included because the distance between the street and the house may be rather large, so it is helpful to be able to compensate for cable attenuation in this manner.
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