Composite to S-Video

Interfacing a composite signal to a S-Video signal is always a little bit tricky. Composite signal use one wire to transmit the composite signal, that is the luminance and the chroma. S-Video use to wire for that, one for the luminance (Y), one for the chroma (C). It is why S-Video is also called Y/C.

It is expensive converter on the market. Such converters are specific to the norm you want to convert. We will see here a very cheap alternative, a simple connector that will archive a very good result.

This connector will work in both ways, but of course, the result will never be better than the original signal. Circuits are not matched exactly right, but the picture quality I get is very good. And in any cases, prefer short and good quality cables for video signals.

Schema

Beside the connectors, the circuit use a little 470 pF ceramic capacitor.

Y-Ground---------|
                 |---------Composite ground
C-ground---------|

Y-signal---------|
                 |---------Composte video signal
C-signal---||----|
          470pF