This circuit was found in a 1980s documentation. Similar configurations appear in the section, but from different sources. The circuit makes use of components of the time.
This simple timer based on unijunction and SCR transistors is from 1995 documentation. The maximum...
This configuration with complementary transistors causes an LED to flash at a frequency that is...
An interesting application that can be implemented with the LM139 is the pulse width modulator. This is...