Hi folks, Failing Atari PSU aside I remembered a question I had ages ago but never posted about the power circuit of another 80s home micro, the Enterprise 64. This machine is powered by a 2A 9V unregulated PSU and internally there’s a pair of 7805s and a 78L12 to smooth things out.
There’s also a small transformer coil in there too (L1 on the following schematic) and I’m not entirely sure what it’s for. Here’s the schematic of the original circuit, any enlightenment gratefully received since I have an Enterprise 64 with a dead coil :) http://www.binarydinosaurs.co.uk/ep64PowerRegulators.png <http://www.binarydinosaurs.co.uk/ep64PowerRegulators.png> Cheers! — Adrian/Witchy Binary Dinosaurs - Celebrating Computing History from 1972 onwards
