Quick thoughts on power supply
Just a -very- quick look at the circuit -
I think every diode and every polarised capacitor wants swapping round end for end. The transistor Q1 will then be in the positive line and (conventional current flow) the current will flow into the collector and out of the emitter. The Pos and Neg output terminals need their labels swapping round.
The circuit then starts to look like the one here on ETO in the 'Electronic Projects' section labelled "Stabilised Power Supply with Current Limiting", which also has a bit of waffle explaining operation.
I don't mean to kill you off but is it right that we appear to be doing homework here? (just a thought :wink: )
Kinjal I have seen transistors used backwards for real weird circuits, I think there is some frequency response improvement or something (up at GHz) - I forget - but this configuration is as rare as hens teeth :?