pacoarcade
Professional
This is a video buffer to connect arcade boards to CRT tv sets. It's based on a THS7374 with DC coupled output for RGB, color calibration and a 74HC14 sync buffer outputting 75Ω ~400mV for SCART or TTL CSYNC. It's based on THS7374 documentation, RGB's sync message, viletim's sync message, AV-Driver and my own experimentation.
For audio just connect speakers to the JAMMA edge to get the best experience. This board doesn't have mounting holes to keep a small footprint; you can attach it using mounting tape.
For audio just connect speakers to the JAMMA edge to get the best experience. This board doesn't have mounting holes to keep a small footprint; you can attach it using mounting tape.
Features
- Small footprint, no vias for video signals
- AC Coupled inputs and DC coupled outputs
- Regulable Red, Green and Blue colors
- Buffered sync output TTL or 75Ω ~350mV
- Dedicated ground plane to minimize interferences
- LPF filter on/off selectable by a jumper
- Minimalist design so you can fix a bad supergun or consolizations
Notes
Published under Public Domain. Although it has been extensively tested, I take no responsability of the damage done by this design in any case.Attachments
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