We found this ladder-shaped signal generator circuit in Radio Electronics magazine from August 1966. The circuit uses a unijunction transistor as its base.
This high input impedance and high output current circuit was found in 702 Motorola documentation. The...
These two circuits for 1 and 2 LEDs were found in American documentation from the 90s. The...
Found in an old American publication, this circuit indicates the direction the antenna is pointing in...