Small TV Modulator Using A Motorola MC1374

How can television modulator be small and simple like this? First, it uses integrated circuit, and the second, any TV modulator is nothing more than amplitude and frequency modulator. This simple circuit employ a Motorola MC1374 integrated circuit to form a small TV modulator.  To protect unwanted interference, this circuit need a shielded box and outboard circuitry.  The coil L1 […]

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High Off Isolation Video Switch/Multiplexer

Video switch is required to mux/multiplex several video sources, enable multiple camera to be displayed subsequently on a single monitor. This multiplexing could significantly reduce the cost and the space for the monitor. High off isolation means that the signal path from input to output will be completely disconnected, ensuring there will be no signal leakage and cross-talk between channels.  […]

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