This circuit visually indicates that a high voltage is present in an outlet or other point. The neon lamp is common, and the appearance of the assembly is suggested in the same figure.
We found this transmitter in 1980s documentation. Coil data is found next to the diagram and...
In the figure we have the configuration of the circuit as a conventional Darlington. In this...
This circuit is from a 1977 publication and is characterized by an adjustment of the polarization point of...