This circuit is from an Electronics Now from the 90s. The circuit uses a power integrated circuit from the time that must be equipped with a heatsink. The power supply is 18 V.
This circuit was found in the November 1992 issue of Radio Electronics magazine. The circuit has...
In this circuit found in a 1991 publication we can use the 2N2646 unijunction transistor and the...
This power source was found in an old Argentine publication from 1973. The transistor could be the...