This circuit is from Motorola's Linear Interface ICs from 1993. The MC1723 is the equivalent of the well-known 723. The transistor supports equivalents.
Found in a Linear Technology 80s integrated circuit manual this circuit has its gain controlled from...
The transistors in this circuit accept equivalents and the coil is of the car ignition type. The...
This sweep generator or current-controlled oscillator was found in Popular Electronics from...