This voltage-controlled oscillator was found in a 1965 Electronic Design. Transistors are from the time, and modern equivalents can be tested.
This “compandor” circuit has the opposite effect of CB15195E. The LS150 is not common today and...
This circuit was obtained from an American documentation from the 1980s. The T1 triggering...
This circuit is suggested by the Linear Applications Handbook of National Semiconductor, being used...