This circuit is from a 1967 publication. The configuration holds true for modern transistors having a feedback across R2.
This basic configuration of an astable multivibrator was found in a publication of the year 1968....
This circuit can be used in a power grid remote control project with the coil according to the...
The TDK MLH2012 22 nH power inductors for RF applications with a maximum current of 1.85 A can now be...