1stage Posted August 31, 2019 Share Posted August 31, 2019 (edited) Okay, so I got my Aquarius composite output amp circuit bread-boarded and working... Not sure how close the colors are, or if I've got a good picture or bad picture, but its loads better than the RF output I was getting. This is the schematic for my circuit... I am removing the SJ1 bypass pad, and I know there are PROBABLY cheaper video buffer ICs I could use, but it works... EXCEPT... No audio. Does anyone know of a single-supply 5v audio amp (preferably DIL package) that I can use to drive the standard RCA input on most TVs? The IC I got with the video buffer IC didn't work in single-supply mode at 5v. EDIT: I’m going to use an LM386. Edited August 31, 2019 by 1stage Found the right audio amp chip 2 Quote Link to comment Share on other sites More sharing options...
jaybird3rd Posted September 2, 2019 Share Posted September 2, 2019 Thank you for posting this! It looks good so far, although I'd love to see how the output compares to the original RF on a CRT. Let us know how the LM386 works out, too! Your circuit looks compact enough to be able to fit onto a single board alongside Bruce Abbott's RGB upgrade. I'd like to (finally!) put my Aquarius back on the workbench to test both upgrades; I'm particularly interested in testing the RGB output with an HDMI upscaler like the Framemeister. Eventually, I'd love to put together a small upgrade board, one which combines both outputs and fits into the original RF modulator footprint. Quote Link to comment Share on other sites More sharing options...
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