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The S Video to RCA cable is sometime hard to find and the adapter is almost every time too short. I’ve searched at my local store and haven’t found any. So I’ve decided to search on google and found some useful sites so is easy to make on your own SVideo to RCA adapter with almost no external components except of course the RCA jacks and the S Video.
CGA adapter / SCART has great advantages as it does not require separate power source and that uses very few external components, which can be easily adapted in the SCART connector. The signals from R, G and B pins of the CGA’s board are converted from TTL levels to SCART levels with resistors R4, R5 and R6 and entry’s impedance (75 Ω) of scart inputs.
There are monitors which only have three BNC inputs and which use composite synchronisation (‘sync on green’). This circuit has been designed with these types of monitor in mind. As can be seen, the circuit has been kept very simple, but it still gives a reasonable performance.
This 3 volts Car Adapter circuit is based on a standard LT1074CT switching regulator IC. The schematic shows the LT1074CT used as a positive step-down or ‘buck’ converter.
The ‘switcher’ is used to convert a +12-volt car battery voltage down to +3 volts for use with the personal hi-fi’s and handheld games for the author’s two boisterous children on long car journeys. Note at under ten years of age, children will rarely be hi-fi aficionado’s and are generally not concerned with any noise generated by the ‘switcher ‘circuit.
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