Free Simple Circuit Diagram
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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Gain adjustment will be more flexible if it controlled by a voltage signal, since we can use many methods to provide user interface. We can control it by a potentiometer with anti glitch filter, or we can drive it with DAC from digital controller. On the circuit depicted in the following schematic diagram, we use silicon diodes to vary the […]
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A video buffer circuit is characterized by its stable wide-band unity gain. Along with stable wide-band unity gain, providing low capacitance and high input impedance will be enhance the circuit’s performance, and the circuit depicted in the following schematic diagram will be suitable for video buffer application:
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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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