We found this circuit in a 1965 Electronic Design. The transistors are from the era, and modern equivalents can be tried out.
Sawtooth-type waveforms are typically generated by relaxation oscillators with unijunction...
This circuit was obtained in an Argentine publication in 1976. It consists of a series voltage...
Using a 4046 PLL, which is uncommon today, this circuit was found in the October 1994 issue of...