SPDIF RCA to (Optical + RCA) Adapter

I needed to connect one RCA digital SPDIF output to a TOSLINK optical input. As many times, a simple device with that functionality was again much more expensive that what I believed reasonable. I found some circuits on the net and I adapted those designs to my needs. I finally came up to this circuit:

Since it was very simple and I only needed one, I didn�t design a PCB. I built it on a project board with the following layout:

This is what the one I built looks like:

Although it does not meet the standard in terms of impedances and isolation, it does the job, and has worked with every device I�ve connected to it for more than two years now.

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