Ideal for benchtop use, this dual-band circuit was obtained from the 1995 Electronics Now magazine. The circuit can be powered with voltages from 5 to 12 V.
This power supply was found in the same 1990 special issue of Radio Electronics Experimenter...
We found this circuit in an old American publication from 1975. It can use almost any common FET...
Found in an Elektor from the 90s, this circuit is based on components that are still common today....