This circuit is from a Fairchild digital clock module shown in the March 1977 issue of Radio Electronics magazine. The circuit required a few external elements, including a common transformer.
With this converter it is possible to tune the signals of the 15 MHz WWV.in AM receiver. WWV is...
This negative voltage source was found in a Popular Electronics from the 90's. The transformer has 120V...
This circuit is from the Audio Handbook of the National Semiconductor of 1977. Its purpose is to...