This adjustable frequency circuit was found in December 1986, Radio Electronics magazine. The base frequency is given by C1 and the power supply must be 5 V.
This circuit can source up to 1,000 V from a 9 V battery. Output current is very low, some...
This power supply uses integrated voltage regulators for 1 A of the 78xx series. The output...
This circuit appeared in Amateur Radio Today in an issue and was found in a 1995 issue. The...