Claus - I'm working on a different circuit that is still based upon using a super cap ... that can be used for either LEDs or bulbs - at the same time. "Watch this space."
George - I don't even know what circuit Richmond sells. I've used their products in the past and they work just fine ... but they tend to target the DC market ... and the last time I checked they were very "proud" of them. It was the available circuits such as those from Richmond Controls that "sent me looking for an alternative that works for/is designed for LEDs -and- works in either DC or DCC".