This basic circuit was found in the March 1998 issue of Electronics Now magazine. The circuit is powered by 2V and uses a 28 MHz crystal or resonator.
This circuit was found in a 1992 publication. The circuit uses common components and includes the...
This protection circuit for battery chargers was found in an old Elektor. The relay is according to...
This very low frequency amplifier has a gain of 1,000 and was found in a 1967 documentation. The circuit is...