This flashlight project with a blinking light that makes it easy to find was found in the January 1990 issue of Radio Electronics magazine. The light uses a common light bulb.
Found in a 1970 documentation this circuit makes use of components still common in the market. The...
Found in old documentation, this circuit makes use of amplifiers of the time, uncommon today. Next...
This circuit was found in ancient American documentation. Equivalent operational amplifiers can be...