Found in an Electronic Design from 1968 this circuit generates a linear sawtooth signal modulated by an input signal. The transistors are from the era.
This circuit can source 3 to 12 V with currents up to 500 mA depending only on the transformer....
Found in an Electronic Design of 1964, this circuit operates with control voltages from 0 to 12 V...
This circuit was obtained in a 1977 Radio Handbook. The transistor is from the era and the coils...