This circuit uses a resonant reed switch at the trigger frequency. The circuit is from General Electric in a 1966 documentation. This type of component is rare today.
Using one unijunction transistor and two bipolar transistors, this circuit generates a signal from...
This circuit was found in an American 80s circuit manual. The components used are unusual. The...
We found this circuit in 1969 American documentation. FETs admit equivalents, as do transistors. The...