Video signal distribution system

A video signal distribution system including a video amplifier circuit having an input terminal connected to a video signal source and an output connected to a signal combiner that is arranged to receive signals from a video appliance, the signal combiner being arranged to provide signals input thereto to a television set, comprising:

• a first transistor circuit arranged to receive video signals from the video signal source, the first transistor circuit including a first transistor circuit connected in a common emitter configuration with its base connected to an input terminal of the video amplifier circuit and arranged to provide a predetermined forward gain in signals input thereto such that signals output from the video amplifier circuit have amplitudes suitable for input to the television set;
• a second transistor circuit including a second transistor arranged in a common base configuration and having its emitter connected to the collector of the first transistor, the second transistor being arranged to provide a predetermined reverse loss to prevent transmission of RF signals from the video amplifier output to its input;
• and
• a third transistor circuit connected to the second transistor circuit and including a third transistor arranged in a common collector configuration to provide an impedance transformation such that the video amplifier has a predetermined output impedance at the emitter of the third transistor.