This circuit was found in documentation from the 80s. It is based on unijunction transistors not very common today being synchronized by the 60 Hz power grid.
This monostable multivibrator with signals in phase opposition was found in October 1986 Radio...
Found in a 1964 publication, this circuit makes use of transistors from the time. It operates on...
This circuit has a 200 kHz bandwidth and a low input current. The circuit is from the 80's, but...