On Leandro Garcia layout, he has posted latest pictures of craftsmanship progress (oh that I could do this kind of woodworking, sigh). He shows a picture and its schematic of a DC regulator he will be using on layout..
https://ogrforum.com/...5#102651513689249205
What surprises me is paralleling three regulators that in turn operate three paralleled 3055 transistors. Isn't usual practice to include small value (0.1 - 0.47 ohm) ballast resistors to minimize current hogging, so one regulator and/or transistor doesn't have all the load? Also there is no feedback from the output to the 317 regulators to compensate for varying loading, unless Leandro will be hooking this to a known load like lighting and animation, and the output probably wouldn't vary that much anyway over open to full load.
Granted this is not a high precision lab regulator. Just curious what other gurus think.
