We found this circuit in a 1971 documentation. The circuit can be assembled with more modern transistors such as BC548 for Q1, BC558 for Q2 and BD135 for Q3.
We found this relaxation oscillator in a 1967 General Electric documentation. The frequency is given...
This flip-flop was found in an old documentation, being able to use transistors of general use...
We find this circuit in a 1977 technical documentation. The circuit generates signals in a wide...