RGB to NTSC video converter (CB9387E)

Found in a Radio Electronics from the 90s, this circuit converts analog TV signals from RGB to NTSC. The integrated circuit is not common today.

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VCO with a Frequency Range of 100: 1 (CB1545E )
We find this circuit in a documentation for engineers from 1971. The circuit generates rectangular and...
High Q Filter (CB25362E)
This 1/2 hertz high selectivity filter was found in the December 1990 issue of Radio Electronics...
High Resistance Adapter (CB24718E)
Connected to the low current input of a standard multimeter, this circuit enables the reading of...