I have built a LM317 power supply, which is working nicely through a DC wall wart and wanted to hook up to an AC transformer so it can run off mains and free up my wall wart, so I made up the below circuit
And hooked it up to my 240V to 18V transformer on bread board, and had smoke coming out of it. Note only the 18V side was connected up to my bread board not the 240V part!
Is that correct that diagram. I just want to be able to have AC mains (240V Australia) through a 500mA-1A fuse into the transformer then rectified off to my power supply.
Am I missing something?
NOTE: In the diagram AC+ is 18V tap out of the tra