Found in a magazine 73 for radio amateurs, this circuit makes use of general purpose transistors and the integrated circuit is still easily found.
This circuit causes the voltage at the regulator output to rise slowly to the value determined by the...
In the figure we have a piezoelectric transducer drive circuit that can be used in conjunction with the...
This is the traditional configuration of a 5 V supply with the 7805 for a current of 1 A. The...