We found this parallel regulator in a 1973 publication. Transistors admit equivalents and the output voltage can be modified by changing the zener.
In the figure we have a practical circuit for use with a magnetic transducer. The 20 M ohms...
Based on the well-known LM3909, this LED pulser circuit was found in American documentation from...
This circuit was found in old documentation but uses components that are still common. The circuit...