This unijunction transistor circuit was found in Radio Electronics magazine from July 1968. The circuit operates up to approximately 100 kHz depending on C1.
In this circuit found in a 1991 publication we can use the 2N2646 unijunction transistor and the...
This circuit is the equivalent of the CB121, but is triggered with the negative transition of the...
Found in 90s Popular Electronics this circuit amplifies signals over a wide range of frequencies....