I have built and tested, the revised version of, both the positive, and the tracking negative regulator. The new version is here:

I have not included Q12, since it was part of the original current limiting circuit. The pass transistors Q5 and Q7, are mounted off-board, on a suitable heat sink. R18 adjusts the maximum output voltage, and R17 adjusts the voltage of the negative tracking regulator.

I will do some more testing of the power supply under different load conditions, and post the results.

LAB power supply Eagle files

Generated on 2018-05-03 01:14:21.913116