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 was found in an Electronics World magazine from 1990. The circuit can be mounted...
This 6-transistor commercial radio with 6 V supply was found in a Japanese publication from the...
This traditional doubler configuration with the 555 can be found in other articles on the author’s site....