Using the integrated circuit DCP01051D this circuit was found in the magazine Electronics Now of August 1998. The maximum current is 50 mA.
This conventional series reducer circuit reduces the voltage of a 12 V battery to the selected value...
In the figure we have a converter that generates a negative voltage from a positive voltage...
This circuit covers the bands from 1.8 to 150 MHz, with plug-in coils whose characteristics are...