This circuit is from a 1967 publication. The configuration holds true for modern transistors having a feedback across R2.
This medium wave radio with germanium transistors is from a 1957 Raytheon publication. Modern...
This circuit activates the horn if the door is opened with the headlights on. The circuit is for...
This circuit was obtained in an Electronque Loisirs magazine from France, in a July 1991 edition. It...