This circuit was found in an Electronics Now of the 80s applying to NiCad batteries of the time. The circuit is powered by a 12 VAC source, for example, the secondary of a transformer.
This circuit makes use of germanium transistors, providing a fraction of a watt power. It was...
This circuit has appeared several times on this site in different applications. This is from 1997...
This conventional application of the 555 as monostable was found in a technical documentation from...