This circuit is from Dutch documentation from 1967. The circuit works with a component of the time, the BRY39, which is uncommon today.
This circuit was published in an article in Electronics Now magazine in October 1995. The circuit...
This simple circuit has its trigger point set in the trimpot. The transistor can be any general...
This is the traditional version of a neon flasher, found in a 2004 documentation. The capacitor...