I put a socket for a 24vdc wall adaptor on my prototype board, with a 7805 5vdc regulator and 47uF capacitor between ground and output (5v). The center pin is ground, both on the adaptor & the plug. 24v only goes to the Input leg of the 7805, and nothing else. This simply sends 5v to the main path at the edge of the board.
The 7805 blew up in short order. I can't see anything wrong with the wiring. I see now that there's some kind of 7805 built in, with the TO-92 case - is this interfering with the 7805 I added? Is 24v too much to attach directly to the rail?
The 7805 blew up in short order. I can't see anything wrong with the wiring. I see now that there's some kind of 7805 built in, with the TO-92 case - is this interfering with the 7805 I added? Is 24v too much to attach directly to the rail?